Killian – aka Cillian – is a spirited yet resonant Gaelic name that was borne by several Irish saints and could make a distinctive replacement for the dated Kelly. Kylian is another spelling that's gaining traction, thanks to French soccer star Kylian Mbappé. Possible downsides: an unsavory first syllable and a connection to the trendy brew.

A doubly Presidential name, via Pierce and Roosevelt, Franklin was given an initial boost via the fame of Benjamin Franklin. It also has a literary tie to the main character of the Wilkie Collins classic The Moonstone.

Kayla is a modern invented name that emerged in the late 1950s. It may have been inspired by the similar sounding Michaela, though it could equally have come about as a combination of the then popular name popular name Kay and the familiar -la suffix.

As sturdy as Oak, but with stronger roots as a first name, Oakley ticks lots of boxes for modern trends. With its unisex vibe, its nature-based meaning, its surname-y feel, and its popular -lee ending, it's not wonder Oakley is on the rise.

Blake -- an early unisex option -- dropped out of the Top 100 in 2017 for the first time since 1988, but remains a sophisticated choice. And yes, both conflicting meanings of Blake are accurate. It originated as a surname in England derived from a nickname. Much of its masculine image was influenced by the wealthy, silver-haired character Blake Carrington in the massively popular 80s TV series Dynasty. Rosie O'Donnell has a son named Blake.

Walker is both a Waspy surname name—as in the W in George W. Bush—but it also has a gentle ambling quality and a creative connection to such greats as writer Walker Percy and photographer Walker Evans, whose father was also named Walker.

Kyler was once a creative solution for 90s parents who enjoyed the sounds of Kyle and Tyler but didn't want to use anything so popular. Now a well-established name on the US charts, it is given to more than 1000 babies every year.

Kathleen is the early Irish import version that came between Katherine and Kaitlin, and which hasn't been used in so long it's almost beginning to sound fresh again. It was a surprise pick by one of the hip Dixie Chicks, Martie Maguire. Kathleen was a Top 10 name from 1948 to 1951, and it is the subject of several old sentimental songs, such as "I'll Take You Home Again, Kathleen."

Lark is getting some new and well-deserved attention as a post-Robin and Raven bird name. Although it was first recorded as a name in the 1830's, it has never appeared on the Social Security list.

Highly popular in Germany, Norway, Lithuania, and Austria, Lukas is a spelling variation of the also extremely popular Lucas. The "K" spelling gives it extra kick and a more international, globe-trotter feel.

The unisex Blake, which indeed has two conflicting meanings, has a briskly efficient image when used for a girl.

Yesterday's hottie, today's mom name. Kelsey derives from several English place names and may mean "Cenel's island", from the Old English name Cenel "fierce".

Originally an English surname, borrowed from the place name, Kendale, Kendall was given almost exclusively to boys until the 40s when it began to be used for a small number of girls each year. By the 80s, it was a gender-neutral choice, however, since the 1993 appearance of the character Kendall Hart in the soap opera All My Children, it has been leaning feminine.

Two drawbacks: some unpleasant World War II associations, and the Santa clause.

A tributary of the River Clyde in Scotland, called in Scottish Gaelic Abhainn Cheilbhinn: caol ("narrow") or coille ("wooded") + abhainn ("river"). As a surname, it derives from the name of the river.

Luka is one of the coolest names in recent years, following suit of its cousin Luca which is now a Top 50 name. Luka is on its way up the charts and may crack the Top 100 in the very near future. Luka has a lot going for it — it is following the tails of Lucas and Luke which have been enjoying significant popularity for years. It also boasts the very current "-ah" ending sound that feels fresher than ever for boy names, from Noah to Ezra to Judah. The "k" in the middle gives an extra edge as well. This spelling is the traditional form of Luke in various Eastern European countries.

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.

Extreme makeover: Brooklyn has gone from jokey Borough Boy name in the 1990s to a leading girls' name starting with B. The status of New York's Brooklyn as hipster heaven is ironic as few bona fide Brooklyn hipsters would choose this name.

Blakely, along with Blakeley, Blakelee and Blakeleigh, is one of the post-Ashley surname names that end with the lee sound so stylish today. Reality stars Trista and Ryan Sutter named their daughter Blakesley. These surname-names are among the most stylish English names for girls.

Khalid has flirted with the Top 1000 for several decades now, climbing back on in 2015 after more than a decade's absence. Its return could be in part because of the popularity of snapchat personality and rap collaborator DJ Khaled. R&B singer Khalid may also be contributing to its newfound popularity. The name is important in Islamic history thanks to a 7th century military leader. Khalida is the feminine version.