Alice

Anna

Annie

Bessie

Callie

Carrie

Cora

Dora

Edna

Ella

Ellie

Florence

Grace

June

Julia

Lillian

Lillie

Louise

Martha

Myrtle

Nellie

Nora

Ruby could be a short form of the Biblical name Reuben and especially its streamlined form, Ruben. As a gemstone name, it's currently enjoying a fresh boom of popularity for girls – nearing the US Top 50 for the first time in almost a century. <br></br>
Despite its two waves of popularity for girls, it has been occasionally used for boys since the 1890s. Since Ruby re-entered the US Top 100 for girls in 2011, nearly 70 boys have been bestowed the name.
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While Ruby isn't likely to become a (statistically) unisex name just yet, as softer options like True, Ari, Robin, Casey, Alby, and Tatum come into style, perhaps a few more parents will consider it?

Ruby

Rose

Sarah

Everild's list "Bonnie Names for Boys" of 31 great name ideas: Alice - Sarah!

Bonnie Names for Boys

Nameberry has a Geezer Names for Girls list, but it seems to have been forgotten that, for every girl 'back in the day' named Howard and Wallace, there were as many boys named Rose and Ivy! - Just a few names taken from America's top 1000 from the 1880s and onwards.