Alaska is a state name that's gaining a following, along with Montana and Dakota. While it was used exclusively for girls in the 2020 US name statistics, there's no reason it can't work just as well for boys.

Alaska

Alba is quietly making a behind-the-scenes comeback, perhaps thanks to actress turned baby-product mogul Jessica Alba. Last on the Top 1000 a century ago, the name was given to nearly 200 baby girls in the US last year. Alba might be tomorrow's successor to Ava and Ella. In Spain, Alba ranks among the Top 20 <a href="https://nameberry.com/girls-names">girls' names</a>. Alba is the name of a character in The Time Traveler's Wife.
 
Alba is a popular patriotic girl name in Scotland, as the Scottish Gaelic term for the country is Alba.

Alba

Aspen is part of two groups of stylish and unique baby names: <a href="https://nameberry.com/list/329/nature-baby-names">nature names</a> and place-names. The name of a graceful tree in the poplar family with heart-shaped leaves so delicate they quiver in the gentlest breeze, Aspen is also the name of a trendy Colorado ski resort. Aspen started as a unisex name possibility but now is much more frequently worn by girls.
 Aspen entered the popularity list in 1993 and is a good bet to start climbing higher as more and more parents respond to the appealing place and nature image it evokes.

Aspen

Bianca, the livelier Italian and Shakespearean version of Blanche, has been chosen by many American parents since the 1990s, just as Blanca is a favorite in the Spanish-speaking community. Its meaning of white relates to snow, making it one of the prime <a href="https://nameberry.com/list/89/winter-baby-names">names for winter babies</a>.
 Miss Bianca was an elegant mouse (voiced by Eva Gabor) in Disney's 1977 The Rescuers, and Bianca features as a character in two Shakespeare plays, Othello and The Taming of the Shrew, not to mention its musical offshoot, Kiss Me Kate.
 Bianca was brought to prominence here by the first Mrs. Mick Jagger. Her name entered the U.S. popularity ranks in 1973, reaching a high of Number 84 in 1990. Bianca was chosen for her daughter by actress Tia Carrere.

Bianca

Blanche, which originated as a nickname for a pale blonde and then became associated with the notion of purity, was in style a century ago, ranking in the double digits until 1920. She then had to fight the stereotype of faded Southern belle, a la Blanche DuBois in Tennessee Williams's A Streetcar Named Desire and Blanche Devereaux in TV's Golden Girls. Now all three of the Golden Girls--Blanche, Rose and Dorothy--could be ready for revival, with Blanche sounding like a stronger, simpler alternative to Bianca.
 A saint's name, Blanche was a royal name in France by the twelfth century, then was brought to England by the French wife of Henry I. One possible powerful namesake is Blanche Scott, one of the original daredevil aviatrixes. You might also take its meaning to relate to snow, making it one of the perfect <a href="https://nameberry.com/list/89/winter-baby-names">winter baby names</a>.

Blanche

English place name turned handsome surname name.

Caldwell

Cole -- a short name that embodies a lot of richness and depth -- has long been associated with the great songwriter Cole Porter. It's quite popular in Scotland.
 Old King Cole -- which refers to a real British king -- is familiar to all kids. Cole was the name of the child in The Sixth Sense and was also the name of -- sorry -- the notorious outlaw Cole Younger, who was born Thomas Coleman.

Cole

Douglas, and more particularly its nickname, Doug, had a real romantic swagger in the 1950s and 1960s dating back to swashbuckling Douglas Fairbanks, but today is more likely to conjure up your mom's prom date. Originally a Celtic river name, it became attached to a powerful Scottish clan, renowned for their strength and courage. In its earliest incarnation, Douglas was used equally for girls and boys.
 Douglas has been on the popularity list for as long as US records have been kept, for a considerable period in the Top 100, often used to honor World War II General Douglas MacArthur.

Douglas

This Welsh nature name that can be pronounced exactly like the male Ira. Or, to avoid confusion, you could just name her Snow. 

Eira

Fannar is one of the top names for boys in Iceland but is rarely seen anywhere else in the world.

Fannar

Gwenyth

Holly ranks just in British Top 50, but it's been out of favor here since the 1970s Era of Nickname Names. Still, the name may be on her way back as a rejuvenated nature pick.
 Jolly Holly has always been among the favorite <a href="https://nameberry.com/list/412/christmas-baby-names">names for Christmas babies</a>, evoking the symbolic shrub with dark green leaves and bright red berries. And Holly is the flower for the month of December, so it's also among the perfect <a href="https://nameberry.com/list/577/names-for-december-babies">names for December babies</a>.
 A memorable fictional Holly is the enigmatic heroine of Truman Capote's Breakfast at Tiffany's, Holly Golightly (almost named Connie, and with the full name Holiday), played indelibly by Audrey Hepburn. A real life one is actress Holly Hunter. Holly Short is a fairy character in Eoin Colfer's Artemis Fowl novels. And in Galsworthy's The Forsyte Saga, Holly and Jolly are siblings.

Holly

Khione was the name of several minor figures in Greek mythology, of which the most notable is the nymph who Hermes turned into a snow cloud. Khione works as both a high-brow mythological name and a Kardashian-trendy K name.

Khione

Although Lumi (Finnish for "snow") is far more popular, the elaboration Lumia is used in Finland as well. It's also a technical word in English for patterns of light used as an art form, and in Italian it refers to the citron fruit and tree – a pear-shaped citrus fruit also known as a sweet lemon. Nokia chose the name for a brand of smartphone, now discontinued.

Lumia

Western place-name that feels equally appropriate for both genders. Note: Natives say rhyme that second syllable with had, so it's not nehv-AH-da.

Nevada

Nicholas is derived from the Greek Nikolaos, a name that evolved from the components nikē, meaning "victory", and laos, "people." It shares origins with Nike, the name of the Greek goddess of victory. Nicholas is also a New Testament name that is well-used in literature, such as in Dickens's Nicholas Nickleby.
 
And then there's St. Nicholas who, in addition to bringing bags of toys once a year, is also the patron saint of schoolchildren, mechanics, sailors, scholars, brides, bakers, travelers, and Russia, where the name was a star of the czarist dynasty.
 
Nicholas, though it has lost some ground (it was in the Top 10 from 1993 to 2002), is still a popular classic that would make an attractive, solid choice.
 
Along with this historical depth, Nicholas, and nicknames Nick and Nicky, project an aura of masculine panache, and has long been a favorite of writers for rich boys, Romeos, thugs and detective characters.
 
Offshoots Cole and Colin have long had lives of their own. Short form Nico is hot and getting hotter.

Nicholas

Nivea, or Nívea, is most commonly seen as a given name in Brazil, where it was derived from niveus, meaning "snow-white" in Latin. The German skincare brand NIVEA, founded in 1882, took its name from the same source.

Nivea

Noelle is the feminine variation of Noël, a masculine given name derived from the French word for "Christmas." As a word, Noël originated as a variant of nael, which evolved from the Latin natalis, meaning "birth." Noelle and Noel have traditionally been given to children born around Christmastime, particularly in the Middle ages.
 
Feminissima, with a French gloss. Noelle and her usually-male counterpart Noel can make perfect <a href="https://nameberry.com/list/577/names-for-december-babies">names for December babies</a> and of course are also traditional <a href="https://nameberry.com/list/412/christmas-baby-names">names for Christmas babies</a>. For extra French flair, add the diaeresis over the first E to get Noëlle.

Noelle

Sounded bright and chirpy in the fifties and ranked in the Top 100 until 1980, but by now Robin has lost traction. Robin is, however, having something of a style comeback for boys.

Robin

Vale is part place name, part nature name -- a poetic term for a type of valley.  Today Show coanchor Savannah Guthrie put Vale on the baby name map when she chose it for her daughter, but there's no reason the name can't work equally well for a boy.

Vale might also be a short form for Valentine or a spelling variation of the city name Vail.

Vale

If you discount the connection to the controversial Whittaker Chambers in the days of the Red Scare, Whittaker is a pleasant enough British surname with the preppyish nickname Whit.  


Whittaker

mint13green's list "Winter Names for Winter Babies" of 21 great name ideas: Alaska - Whittaker!