Angel is one of those names that has a very different trajectory for girls and boys. As a female name, it was most popular in the US from the 1970s until the turn of this century, almost breaking into the Top 100 at its peak in 2001 but then beginning a long slide down the list.
This may be partly because other forms of Angel -- Angela, Angie, Angelica, Angelina -- have dropped from favor too. Or it may be because of the crossover popularity of Angel for boys, partially inspired by Buffy the Vampire Slayer.
As a boys' name, Angel entered the Top 100 in 1997 and remains there today.
Spice Girl Melanie Brown named her daughter Angel Iris.

Angel

Alzack

Asuka

The sweetest and most sensitive of the pet names for Elizabeth, now also one of the most dated. 

Beth

Bisca

Bora

While Charlotte and Caroline are considered stylish and classic members of the Charles family, this somewhat severe Germanic form is fading. It reached its apex at Number 76 in 1965.

Carla

Coco came to prominence as the nickname of the legendary French designer Chanel (born Gabrielle) and has lately become a starbaby favorite, initially chosen by Courteney Cox for her daughter Coco Riley in 2004. At first it was the kind of name that the press loves to ridicule, but we predict Coco's heading for more broad acceptance and even popularity.

Coco

Cana

Chelia

Often stands alone in Israel, but rarely here. 

In Greek mythology, Daphne was the nymph daughter of Peneus, a river god. Peneus saved Daphne from Apollo’s romantic obsessions by transforming her into a laurel tree. It is from this myth that the plant genus daphne, which contains the laurel species, gets its name.
 
Daphne's origins may be Greek, but it's seen by Americans as quintessentially British—as in the Daphne Moon character on Frasier and the heroine of the romantic drama Bridgerton. The shrub inspired the popularity of the name in England, where it became part of the British vogue for plant names at the end of the nineteenth century. 

Though we don't see it becoming a Top 100 name in the US, Daphne is obviously finding more widespread acceptance—and for a distinctive, deeply-rooted, attractive girls' name, that's a positive thing. In fact, Daphne has been in the US Top 1000 for every year but two -- 1913 and 1938. And it's now at its highest point ever in the US and is also one of the most popular girls' names on Nameberry.
 Its most famous bearer is Daphne du Maurier, author of such suspense novels as Rebecca. Fictional Daphnes have appeared in Some Like It Hot (Jack Lemmon as a woman), The Jewel in the Crown, Scooby-Doo, Harry Potter, and Heroes.

Daphne

Droy

Enno

Erza

Flare

Freed

The girls have Violet and Scarlet and Ruby and Rose, but for the boys there's a much more limited palette of color names. Gray (or Grey), is one exception, which could make for a soft and evocative--if slightly somber-- choice, especially in the middle. Kaitlin Olson and Rob McElhenney recently named their son Leo Grey.
 A common surname, Gray/Grey is still an unusual first name choice--it hasn't made it into the Top 1000 in this century--while longer forms Grayson and Greyson are climbing rapidly, with Grayson at Number 97, and his twin at 200.
 The best known bearer of the name, former Governor Gray Davis of California, was born Joseph Graham Davis, Jr, and others with Gray names include Graydon Carter (born Edward Graydon), editor of "Vanity Fair," and Grayer, the child in "The Nanny Diaries."

Gray

Gajeel

Happy

Hibiki

Hisui

Though some might find it a bit heavy-booted, Ivan is one of the few Russian boys' names to become fully accepted into the American naming pool.
Ivan is, of course, ubiquitous in Russian culture. There is one of the brothers in The Brothers Karamazov, the protagonists of Tolstoy's The Death of Ivan Ilyich, and Solzhenitsyn's One Day in the Life of Ivan Denisovich, and the title character in Chekhov's Uncle Vanya. Real life Ivans include writer Turgnenev, biologist Pavlov, tennis player Lendl, and rulers Ivan the Great and --oops--Ivan the Terrible. Vanya is his warm and appealing nickname.

Ivan

Ikaruga

Imitatia

At the height of the Jennifer craze, many parents were cutting straight to the nickname and putting Jenny on the birth certificate. But now that Jennifer is the mom rather than the daughter, Jenny, which has been somewhat replaced by Jenna, has faded as well. 

Jenny

This super-charged variation of Jett is on the rise -- along with the unlikely newcomer Jetson.

Jude is a modern star, maintaining a steady level of popularity -- but not TOO much popularity -- for more than a decade now. Thank Jude Law and the great Lennon-McCartney song "Hey Jude", double-handedly responsible for propelling Jude up the charts.
 Saint Jude was the apostle who interceded for people with problems and became the patron saint of lost causes.Kelsey Grammer has a son named Jude Gordon. Jude is occasionally used for girls (as in Martha Stewart's granddaughter)--but more often as a shortened form of Judith/Judy.
 Jude's old connections to the traitorous Judas Iscariot and Thomas Hardy's tragic Jude the Obscure have mostly faded from memory, though don't be shocked if Grandma objects to the name on these grounds.

Jude

Jura

Jellal

Juvia

Karen is a Danish diminutive of Katherine, an English name derived from the Greek Aikaterine. The etymology of Aikaterine is contested, but generally considered to have arisen from the Greek root katharos, meaning "pure." Kaja is a related name, as it is another Danish variation of Katherine.
 
Karen, a sweet good-girl Danish import, was so popular during the baby boom (Karen was Number 3 in 1960) that it's locked firmly into fashion limbo today. Recently, the name Karen has been turned into a meme, representing a hostile white woman—one who usually wants to speak with the manager.
 
Parents who want to honor a Karen or choose an updated version of the name might want to consider the Irish Kieran, the Cornish Kerensa or Kerenza, or variations from Karina to Kyra.

Karen

Kagura

Kinana

A lovely musical name (remember the old Eric Clapton-Derek & the Dominos song?), Layla's seen a significant surge in popularity, partly partly all names with a double L are stylish, and partly because all the forms of the name push it into the Top 15 for girls.

Layla is the most popular spelling of the name, as well as the one with the most phonetic spelling. Other popular forms are, in order, Leila, Laila, Laela, Laelah, Laylah, Leyla, Lejla, and Leighla.Leila, Laila, Leyla, Laylah, Leilah, Lailah, Leylah

If you're concerned about the name's popularity, you might consider that there are many other names that are similar. There's Leilani, for instance, along with Leah and Leia and Lily and new favorite Lyra.
Layla is derived from the Semitic element layl, meaning "night." It has roots in the Arabic, Hebrew, and Persian languages. In the Arabic story Qays and Layla, Layla is the subject of the poet’s unrequited love. 
 The spelling Laila is represented by boxer Laila Ali.

Layla

Loke is a modern variant of Loki, the name of a Norse mythological figure. Loke is a Top 100 name in Sweden.

Loke

A versatile classic, Lucy is both sweet and solid, a saint's name, and the heroine of several great novels. First fashionable in England and Wales, Lucy is now a popular choice in the US, The Netherlands, and New Zealand.
 
The English form of the Roman Lucia, Lucy derives from the Latin word lux, meaning “light.” Once given to girls born at dawn, Lucy is also associated with Saint Lucia, the patron saint of the blind.
 
Lucy has a wide range of namesakes, from the bossy friend in the Peanuts comic, to psychedelic "Lucy in the Sky with Diamonds," to the rash and zany heroine of I Love Lucy. 
 
It is a name with a rich literary history, chosen for the heroines of Charlotte Brontë’s novel Villette, E.M. Forster’s A Room With A View, Jamaica Kincaid’s Lucy, and C. S Lewis’s The Chronicles of Narnia - just to name a few. 
 
Beyond fiction, Lucy Stone was an important American activist, Lucy Worsley is a successful author and historian, and Lucy Lui is an actress who has imparted strength and style to the name.
 
Simple but sophisticated, playful but grounded, it is no wonder Lucy is a popular choice. Given to over 4000 girls in the US each year, it is a classic that doesn’t feel dusty.
 
If you love Lucy, but don’t love its popularity, you could consider one of its many variants. From vintage Lucille, to the musical Lucetta, to the fresh, unexpected Lux; from nickname-y Lou to sleek Luciana, there are plenty of possibilities.

Lucy

The y makes it seem more like a name and less like an animal, but it's still not as appealing as several Leo choices. 

Lyon

Lahar

Laki

Laxus

Lector

Levy

Lisanna

Mary is the English form of Maria, which ultimately was derived from the Hebrew name Maryam/Mariam. The original meaning of Maryam is uncertain, but theories include "drop of the sea" (from Hebrew roots mar "drop" and yam "sea"); "bitter" (from Hebrew marah "bitterness"); and "beloved" (from the Egyptian root mr).

 Mary, the quintessential New Testament name, was #1 for girls until the mid-twentieth century. Though still popular, Mary is used now mostly for religious or family reasons. If it's style you're after, Mary's many diminutives and derivatives such as Maire, Mamie, May, Mitzi, Molly, Maura, Marietta, and even Maria may seem more fashionable. 

 Mary was the most popular and enduring female Christian name in the English-speaking world (as were Maria and Marie in Spanish and French) until the 1940s. That was when in the US Mary was finally dethroned by such trendy upstarts as Linda and Karen.

 There are six Marys in the Bible, including the Virgin Mary, Mary Magdalene, Mary the sister of Martha and Lazarus, Mary the mother of James and Joseph, and Mary the mother of Mark, and there have been British royal Marys beginning in the sixteenth century. In earlier times Mary was considered too sacred to be used; it finally gained usage in England in the twelfth century, and by the sixteenth had blanketed the female population, to the point where dozens of pet forms had to be contrived to distinguish one Mary in the family from the others.

 The poet Byron deemed Mary a "magic" name, and Bing Crosby proclaimed it "a grand old name." Mary has always been a good-girl name, as reflected by such mid-century icons of propriety and wholesomeness as Mary Poppins and Mary Tyler Moore. The lovely Lady Mary Crawley of Downton Abbey has restored some freshness to the name.

 Among the celebs who dropped their birth name of Mary are Meryl Streep, Debbie Reynolds, and Lily Tomlin.

 For more detail on the origins and possible meanings of the name Mary, see this <a href="https://nameberry.com/blog/in-search-of-the-meaning-of-mary">excellent post on the subject</a>.

Mary

Mavis, another word for the song thrush, is also a relative of the Welsh word for strawberries, mefus. Mavis has something of a British World War II feel, a friend of Beryl and Doris, but it was quite popular in the U.S. a couple of decades earlier, peaking in the Roaring Twenties. With the renewed interest in names ending in 's' — and in bird names — Mavis could make a return, especially with the new interest in Maeve, and in fact, it reentered the US Top 1000 after a 50-year absence in 2016.
 
Some noted bearers of the name are R&B singer Mavis Staples, a member of the Staple Singers, Canadian writer Mavis Gallant and the feminist activist Mavis Leno.
 
Mavis Gary was the name of the Charlize Theron character in the film Young Adult. And — trivia tidbit — in her short-running eponymous sitcom, Whoopi Goldberg's character was named Mavis.

Mavis

Max was derived from Maximilian, a Latin name that originated from the Roman family name Maximus. The character name Max in the children's classic Where the Wild Things Are had an impact on baby namers. Max is a widely used name internationally.
 
Max was transformed from cigar-chomping grandpa to rosy-cheeked baby in the 1980s, along with card-playing partners Sam and Jake. Never quite as popular as it seemed, Max is now close to the the highest it's been on the Social Security list since 1917, after which German-sounding names went out of favor. 
 
Max has been a popular starbaby name for decades, most recently for the sons of Christina Aguilera, Cynthia Nixon and Charlie Sheen, while other celebs, such as Jennifer Lopez and Marc Anthony, have used more formal appellations--Maximilian, Maxwell, Maxfield--on the birth certificate to get to the nickname Max. Skater Scott Hamilton put his own spin on it by maximizing the spelling of his son's name to Maxx.
 
Warning: Max has long been among the <a href="https://nameberry.com/popular-names/dogs">most popular dog names</a>.

Meredy

Minerva is the long-neglected name of the Roman goddess of wisdom and invention, the arts and martial strength, one of the <a href="https://nameberry.com/list/325/mythological-baby-names-for-girls">mythology names for girls</a> that might appeal to adventurous feminist parents. With Juno and Jupiter, she made the Capitoline triad, whose worship was at the very center of Roman religion.
 
Minerva Pott is a character in Dickens's novel Pickwick Papers. In Harry Potter, Minerva McGonagall is a Witch and Deputy Headmistress of Hogswarts, and in the Artemis Fowl books, Minerva Paradizo is equally intellectual. There's also a series of kids' mystery books centering around a Minerva Clark.
 
Minerva was a Top 500 name through the early 1920s, last appearing on the list in 1973. It's well liked on Nameberry though—currently at Number 417. Nickname Minnie fits right in with the other currently stylish vintage nickname names. Curiously, though, actress Minnie Driver was not born Minerva, but Amelia.

Minerva

Macao

Millianna

Mirajane

Natsu

A very popular name for boys, also used for girls, in Japan, most familiar in the West as half of cartoon's "Ren and Stimpy," and as the hero in both the original and updated versions of "Footloose." 

Now that names like Cannon and Gunner, fit for comic book heroes, are rising up, Rogue may fit right in.

Rogue

It wasn't so long ago that Romeo was considered as outre for an American baby as Casanova or Cupid. But that really changed when David and Victoria Beckham chose it for their second son in 2002, a path followed by Jon Bon Jovi.
 Romeo was not invented by the Bard, but was taken from his source material for the play.
Some sources say it descends from that of Romulus, one of the twin sons of Mars.

Romeo

Rufus is a rumpled, redheaded (it was the nickname for red-haired King William) ancient Roman name popular with saints and singers (e.g. Rufus Wainwright); now, Rufus is on the cutting edge of cool.
 Fellow singer James Taylor named one of his twins Rufus, and Rufus Humphrey is a Gossip Girl character. Rufus Sewell is a commanding, intense English actor.
 Rufus is mentioned in the New Testament as the name of a son of Simon the Cytherian, and there are several St. Rufuses. He's also a major figure in the George Eliot novel Felix Holt: The Radical, an honest and passionate preacher and politician.

Rufus

Reedus

Peppy cheerleader name of the 1960s and 70s that's sure to evoke the Four Seasons song of that name. 

Sherry

Simon is pure and simple (not in the nursery rhyme sense), and an appealingly genuine Old and New Testament name that's not overused. These factors make Simon a stylish yet classic choice. 
 
In the Bible, Simon was the second son of Jacob and Leah and the original name of Saint Peter, as well as the name of several New Testament figures. Historically, Simon Bolivar is known as The Liberator of Latin America.
 

The New Testament spelling of Simon (rather than Simeon) was probably influenced by the unrelated Greek name Simon, meaning "flat-nosed". The Hebrew Shim'on or Simeon means "He has heard". Later, it was also conflated with the Old English name Sigemund ("victory-protection") — so there's an element of several origins and meanings in the name.

 Simon was one of the more appealing characters in Lord of the Flies, then became part of the British invasion of names that hit U.S. shores along with the Beatles. Other recent notable Simons include Simon Templar, aka The Saint; Simon Cowell, snarky judge on The X Factor; Simon Le Bon, lead singer of Duran Duran; and Simon Baker, Australian-born star of The Mentalist. 

 Simon is currently very popular in several European countries, including Austria, Denmark, France, Sweden, Switzerland and Belgium.

Simon

Sayla

Sting

Ultear

A Leave It to Beaver/old comic-strip name, vacationing for years with the Griswolds in WallyWorld, but now back as WALL-E? 

Wally

Long lingering in limbo, Warren suddenly seems to be on the cusp of revival. One of the oldest recorded English surnames, Warren's popularity in the U.S. dates back to the nineteenth century, and by 1921, reached its peak at Number 24.
 At one time it was bestowed in honor of General Joseph Warren, the first hero of the Revolution, who was killed at Bunker Hill. There have also been a number of notable first-named Warrens, including the 29th president, Warren Gamaliel Harding, financier Warren Buffett, actor Warren Beatty and musician Warren Zevon. NFL defensive tackle Warren Sapp was inducted into the Pro Football Hall of Fame in 2013.

Warren

It is popularly claimed that the name Wendy was invented by Sir James Barrie in 1904 for the big sister character in his play Peter Pan, which was followed by the classic novel in 1911. Barrie supposedly took it from the nickname "fwendy-wendy", that he was called by a young girl acquaintance. 

 Although the character of Wendy Darling undoubtedly popularized the name across the English-speaking world – peaking in the Top 10 in several countries in the 1950s and 60s – it did actually appear rarely before that. It was likely derived from the Welsh name Gwendolen and its variants.

 Wendy's heyday was once upon a time, but it's starting to undergo a style revolution. With other bouncy and peppy retro nicknames, like Sadie and Edie, rising, Wendy could be part of the next wave.

Wendy

Yukino

Zeref

yunamei's list "Fairy Tail Inspired Names" of 71 great name ideas: Angel - Zeref!