Alina has been drifting up the US popularity charts since the early 1980s, and now sits in in the Top 200. But Alina's real strength is in its international flexibility: The name ranks highly in a wide range of European, English speaking, and Latin American countries.

The poetic, soft-spoken Auden has recently started to be considered as a first name option, used for both sexes, appreciated for its pleasing sound as well as its link to the distinguished modern Anglo-American poet W.H. Auden.

One of the first generation of cool surname names, now largely used for girls in the US, but still popular for boys in its native Scotland. A prominent association for Brits is former prime minister Tony Blair, who was leader at the time of the Iraq War.

This word name entered the US Top 1000 for both genders in 2015, though it premiered a little higher for girls. There are still more baby girls named Briar than baby boys -- 594 vs. 361 in 2021 -- but it's rising in popularity for both. Briar fits the trend for nature names, and it also offers a fresh option for honoring a Brian.

As trendy as the chic Colorado ski resort, with a hint of whimsy from the shimmering trees, Aspen has been climbing the charts for boys since the early 90s. While it has always been more popular for girls, it could work for a boy too.

Andrea may be a gender neutral name in its native Italy and other European countries, but in the US it's 98 percent a girls' name, with only about 20 males to more than 1800 baby girl given that name in the most recent year counted.

It all started in 1946, when Hayley Mills was given her mother's maiden name. Now that spelling is in third place, after Hailey and Haley, with all three adding up to one of the most popular names in the country. Hayley is the most used spelling in Australia.

Ara is a unique boys' name that one of the most melodious in the Armenian name pool, familiarized by Notre Dame football coach Ara Parseghian. In Armenian mythology, Ara was a king so handsome that a rival queen went to war in order to make him her own. The name Ara is also known in the Arabic and Hebrew cultures.

Rhythmic route to the nickname Cal. This musical moniker is another great example of a traditionally feminine name that could easily go masculine.

While Clark ranks in the Top 500 for boys, the Clarke spelling leans towards the girls' side. Regardless, the name works well for either sex.

This name will tick a lot of boxes for many parents: unisex; trendy sound; pretty instinctive to pronounce; and some great namesakes including British chef Ainsley Harriott and American footballer Ainsley Battles.

Daenerys is yet another girls' name invented by "Game of Thrones" author George R. R. Martin that is beginning to gain some traction in real life. Daenerys was used for 67 baby girls in 2013 while one of the character's titles, Khaleesi, was given to 241 baby girls. And the name Arya, also from the hyper-popular series, is one of the fastest growing girls' names in the country.