Milo is most commonly considered to be Germanic name derived from the Latin word miles, meaning "soldier." However, there is evidence to suggest it also may have independently spawned from the Slavic root milu, meaning "merciful." Milo predates brother name Miles, a variation that evolved when the name immigrated to the British Isles in the Middle Ages. Mylo is an alternate spelling.

Ava is one of the prime examples of a modern classic name, rising thought the course of a generation into the Top 10, where it has lingered for nearly 20 years.

Callum is a gentle, charming name of Scottish origin, that is a popular choice across the UK. In the US, it was a rare option until the late 2000s, however, since 2017 it's been rising up the ranks. Complete with easy, breezy and cool nickname Cal, it climbed more than 60 places in the US in 2024, placing it just outside the Top 150.

Rugged but gentle, Rhys is the traditional Welsh spelling of this name, which can also be anglicized as Reese or Reece. Up until 2010, Reese was the preferred spelling in the US, perhaps because parents were concerned about mispronunciation. However, Rhys has since taken over for boys and is now used twice as often as Reese.

Kit is a crisp, old-time nickname with plenty of spirit and style. In the UK it's a rising star for boys, while in the US, it is trending upwards for girls too.

Callahan, the simpler spelling of Callaghan, is a rhythmic jig of a name whose history harks back to the ancient King of Munster. In the Dirty Harry movies, the Clint Eastwood character is Harry Callahan.

Though never as popular as the name of her Bewitched mother, Samantha, Tabitha has its own quirky, magical charm. The name of a charitable woman who was restored to life by Saint Peter in the Bible, it was a popular Puritan choice. Sarah Jessica Parker and Matthew Broderick chose it for one of their twin daughters, which gave it a slight boost. Nonetheless, Tabitha remains in decline.

Avery is a unisex name that is used four times as often today for girls as for boys. But while Avery's popularity is starting to soften for girls, it continues to get stronger for boys -- in keeping with our finding that gender neutral names are becoming more favored for boys than for girls.

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.

Agatha until recently summoned up visions of martyred saints, mauve silk dresses, and high lace collars, but now that some dauntless excavators have begun to resurrect it, we're sure more will follow their lead. Actor Thomas Gibson used it for his daughter in 2004.

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.

Maple is one of those sweet-spot word names that sounds so almost name-like that it doesn't feel outlandish or strange, despite its relative newness as a given name. Just as Juniper is adjacent to June or Pippa, Clover like Chloe or Clara and Ember like Emma or Ebba, Maple is enough like Mabel, Maisie and Mae that it blends in well and has a touch of borrowed vintage charm.

Indie actress Parker Posey put a female imprint on this sophisticated surname that's still about three times as common for boys but rising for both sexes. Parker has the advantage of its nature connection, relating it to such occupational names as Gardener and Forester.

The energetic Russian nickname name Sasha is being used increasingly on its own, though since the prominence of the First Daughter, more than 90% of the American babies named Sasha are girls. Sacha Baron Cohen bears one of the alternate spellings.

Fallon is one of several boyish surname names introduced in the over-the-top 1980s nighttime soap Dynasty. Despite being a "mom" name, Fallon is making a surprise comeback. It returned to the US Top 1000 in 2019 and has been rising since then, as a new generation of parents fall in love with the sound. It is especially popular in the Southern states.

A predominantly male name in the US until the late 1950s, the name continued to rise for both sexes for both sexes for a further decade, before starting to decline for boys. Despite dropping out of the boys' Top 1000 in 2002, Kelly retains a rugged Irish charm.

While the male Alva or Alvah relates directly to the minor Biblical character, the female version is more likely an Anglicized form of the Irish name Ailbhe, or a feminine form the name Alf (and Alf- beginning names), popular in its native Sweden and Norway. Best known as Thomas Edison's middle name, Alva has true unisex roots.

Hollis is a surname-name used quietly for both genders. At last count, it was given to over 200 baby boys and 160 baby girls in the US. Now a Top 1000 name for boys, it could well break into the charts for girls too in the coming years.

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

A variation of Corey, this spelling has also been on a steady decline since the early-1990s. Its days are likely numbered on the US popularity charts altogether.