The e-addition takes the name from slightly hippie-ish nature name to the place name of a picturesque island off the coast of Scotland, and for baby namers it's by far the more popular spelling.

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.

Alexis, a one-time exclusively-boys’ name, was more popular than its sister Alexandra for quite a while, but in recent years Alexandra has overtaken it once again. Alexis was a Top 20 girls’ name from 1994-2010 but has experienced a decline in popularity in recent years, though now it's one of the top unisex names.

Originally used for children baptized in holy water from the river Jordan, it became one of the leading androgynous names of the nineties. As the balance tips toward the boys' side, it's slipping on the girls' popularity chart. Alternate spelling Jordyn is now more popular for girls.

Paris, a one-time mythical and Shakespearean boys' name, peaked in 2004 at Number 157 at least in part due to the highly publicized Paris Hilton. Michael Jackson used it for his daughter.

Sasha, largely male in Russia--and also spelled Sascha and Sacha--is an energetic name that has really taken off for girls here, chosen by Jerry Seinfeld (using the alternate Sascha spelling) and other celebs. The Barack Obamas use it as the nickname for their younger daughter, whose proper name is Natasha. But in line with a trend toward softer-sounding boys' names like Asher and Joshua and thanks to Borat star Sacha Baron Cohen, Sasha also still has life as a boys' name too--it's popular in France for boys and girls almost equally.

Billie is a tomboy nickname name, part of the growing trend for using boyish nicknames for girls and now destined for stardom along with its most famous contemporary bearer, music sensation Billie Eilish.

After a 60 year slide down the popularity ladder, Robin made a turnaround in 2020 and began climbing back into favor for baby girls. One reason may be its new status as one of the most evenly-divided gender neutral names.

Drew is an elegant formerly male-only alternative to Andy that joined the stylishly upscale Paige-Brooke-Blair sorority, thanks largely to Drew Barrymore. Barrymore comes by her first name legitimately: it was the maiden name of her paternal great-grandmother, Georgiana 'Georgie' Drew Barrymore, one of many esteemed actors in her family history.

A Scottish place and surname that was once adrogynous but now leans about 20 to 1 toward the girls' side, Leslie has a pleasant, heathery feel that kept it in or near the Top 100 for several decades; the Lesly and Lesley spellings are also frequently used, especially in Britain. While Leslie may not be the freshest name in the bunch, it's become a modern classic and is one of the surprising names always to have ranked among the US Top 1000 for girls.

This ultrapopular boys' name is rapidly becoming a hot name for girls; admired for its buoyant Irish spirit.

Boys' favorite retains more of its poetic, windswept quality when used for a girl, as Robin Wright and Sean Penn did. Alyssa Milano gave her daughter Elizabella Dylan as a middle name.

The boyish spelling, which is still pronounced with two syllables and a long e at the end, is sometimes used for girls, though the Jessie form -- whether short for Jessica or standing on its own -- is usually considered the feminine one.

As a boy's name, Shane is related more directly to the 50s movie cowboy and the Irish name Sean; for a girl, it might be a variation on Shannon, Shana, or Shawn. Parenthood star Erika Christensen named her daughter Shane. Another spin, used by Eddie Murphy, is Shayne.

This surname gained momentum in the 1990s, when it was particularly in vogue for males. However, it seems to be experiencing a surge for females—it was one of the fastest-rising names of 2013, jumping 266 spots back into the Top 1000.

In the early eighties, Lindsay, in tandem with Courtney, approached the Top 10.

Once the quintessential bouncy teenager name, Kelly helped launch the trend of unisex Irish names . But it now takes a backseat to more substantial surname names like Kennedy.

A favorite in England and Wales, Darcy is a unisex option with delicacy, grace, and strength. Associated with classic literary and courtesy thanks to Jane Austen's hero, Mr. Darcy, and Bridget Jones's Mark Darcy, its image was partly transformed by English ballerina Darcey Bussell, who helped popularize it for girls.

Jamie is typical of the relaxed unisex names starting with J that seemed so cool in the sixties after decades of Jeans and Joans, though now pretty tepid. Jaime and even Jamey and Jayme are alternate spellings.

Nickname name in the era of Grease. Sandy fits well in the era of boyish nicknames for girls - a la Scottie and Stevie - or as an alternative to the rapidly rising Goldie. While it peaked in 1960, Sandy is still given to about 60 baby girls each year.