Lou, all by itself, is become fashionable for girls, which usually makes a name LESS fashionable for boys. But Lou, like Bill or Jim, is rarely used on its own for boys anyway. (You wouldn't name a boy Frederick Lou the way that girls are named Mary Lou or, in the case of Keri Russell's new baby, Willa Lou.) Long form Louis is getting cool again and, with the Lewis spelling, is the Number 2 name in Scotland.

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.

Sam has long been used on its own for boys, as accepted standing by itself as it is as a short form of Samuel. Straightforward and down-to-earth, Sam is the name of the son of the co-stars of The Americans, Keri Russell and Matthew Rhys. Sam is one of the most popular names that start with S in the Western world, ranking higher in several European countries than it does in the US, where it's trended downward since the 19th century, though it's always been in the Top 1000.

Brighton has long been known as a holiday resort town on the south coast of England. A cheery unisex name, it was used for his daughter by Jon Favreau, but was a boy on the TV show The Nanny.

Referring to the Scottish Isle of Skye, this spelling brings Sky down to earth. Skye is used ten times more often for girls than boys, while the gender split on the Sky spelling is more like three to one in favor of the female side.

Very much a boy's name in Italy, it's beginning to be seen as a unisex possibility here: actress Jennie Garth used it for her daughter, as did influencers Alyssa and Dallin Johnson, When spelled Lucca as in the Italian city, it can also be considered one of the place names along with Venezia, Roma, and Milana that make great Italian names for girls.

The capital of England makes a solid and attractive twenty-first-century choice in the US where it is currently in the Top 1000. Given to nearly 1000 girls and 200 boys each year, it is a unisex option that has been in slow decline since its peak in 2013. Conjuring up images of Big Ben, red phone boxes, and the London Eye for some, but perhaps the rush hour commute and grey skies for others, London is far less popular in the UK and other English-speaking countries.

In the US, London is popular for both sexes, though as the name has risen for girls, it's levelled off for boys. Currently given to around 200 boys each year, it is nearly five times more popular for girls, however, it been on decline across the board since its peak in 2013. Conjuring up images of Big Ben, red phone boxes, and the London Eye for some, but perhaps the rush hour commute and grey skies for others, London is far less popular in the UK and other English-speaking countries.

Newly popular boys' name could cross over in much the way the related Cameron has.

It feels like Finch should be a modern bird name that's as popular as Wren or Lark, but that's not the case - so it's one to consider if you're looking for a nature name that's familiar but rare.

One of the most usable of the pleasant, newly adopted nature/water names (like Lake and Ocean), especially in middle position. It's gentle, slightly whimsical, but grounded by its similarity to May or Rae.

While Jay has been long used as a stand-alone boy name, it has more recently been used as one for girls. Otherwise, it has largely been seen as a pet form of any J name, or as a singular middle name.

One of the most evenly divided unisex names these days; strong and energetic, if overused, for both genders.

Like River and Lake, a cool, refreshing modern water-related choice. This name is also associated with bay leaves, the bay laurel, the contemporary term of endearment, "bae", and the Old English word beġ meaning "berry"

The most enduringly popular hero of Irish myth was Finn McCool, whose name is one of the coolest ever. When used for the female protagonist of How to Make an American Quilt, Finn established its hipness for girls as well.

Out-of-the-way place name (it's an antiquated holiday spot on England's south coast) that might make a brilliant choice. Actor/director Jon Favreau named his daughter Brighton Rose.

Most female Rays used to spell their names Rae, but now the Ray Charles, ray-of-sunshine way is cool for both genders.

Freddie, especially with the ie ending, is one of the old-school boy-names-for-girls that came into vogue at the turn of the last century. Freddie, all on its own, ranked among the Top 1000 girl names until 1958, but in 2021 it was given to just 8 baby girls. Maybe that makes it prime for a comeback, ala Billie?

Nicky is a forever-cute short form of Nicholas once used as a full name but now relegated to nickname (no pun intended) status.

Make that bird name, and while it does work for both genders, it's far more popular for girls, via Raven Symone.