Alexa was a steadily popular modern classic until Amazon's virtual assistant Alexa was released in 2013. It remains relatively well used in the US despite this, though its standing keeps dropping for obvious reasons. Too bad, because it's a strong and pretty name (which is probably why Amazon used it.)

One of the most popular of the trendy Caitlin variations, Katelyn points directly to components Kate and Lyn --making it a bit more traditionally feminine.

Thanks to its dashing British image and c-initialed two-syllable sound, Colin/Collin has enjoyed a long run of popularity.

Different origin from the Welsh Dylan, but increasingly used as a variant spelling to honor Bob Dylan or Dylan Thomas. Still, the Dylan spelling is found 20 times as often as Dillon.

One of the original unisex Irish surname names, energetic Casey bounced onto the scene in the 1960s, then peaked in the 1980s for both boys and girls. Today Casey is having a resurgence for both girls and boys and re-entered the charts on the girls' side, likely due to the character Kayce Dutton (pronounced like Casey) on the hit show Yellowstone.

Antonio is a Shakespearean favorite -- the Bard used it in no less than five of his plays, and has long been a ubiquitous classic in Spanish-speaking countries, where the nickname Tonio is also prevalent. Antonio is also among an elite group of perennially popular names in the US, where it has always been among the boys' Top 1000 since baby name record-keeping started in 1880.

This most proper form of the name shot up the charts in the nineties, only to sink just as precipitously, supplanted by upstarts Makayla and McKayla ad infinitum. The Michaela version retains some elegance as the closest feminine form to the original.

Alison has been long popular in Scotland and widely used here since the fifties. This more feminine medieval elaboration of Alice had long surpassed the original in popularity, but now sounds a tad dated in the U.S., with Alice having leapfrogged back over Alison, Allison, Alicia and other variations.

The hurricane blew this one out of the realm of possibility.

Mike Tyson put a twist on his own name by naming a son Miguel. It's the first name of Cervantes, the great Spanish novelist and poet who wrote Don Quixote.

The name of a courageous tribe, Cheyenne became quite popular in the 1990s, inspiring a wide range of spelling variations—Shyanne is one example that's still on the rise.

A huge name in the late 90's and most of the 00's, Kaitlyn's been on a downward trend in recent years. Kaitlyn and its soundalikes have been so well used in the US that they can no longer be seen as fresh, but it's still relatively popular in Canada.

A crystalline name that retains its loveliness far past its prime. Its biggest downside: Eternal confusion over spelling and pronunciation. Kristen? Kirsten? It can be so confusing that many parents today opt to bypass it.

Football great Brett Favre single-handedly kept this name in the limelight, though it continues to sink in popularity.

Luis has long been one of the most popular Hispanic names in America — it was in the Top 100 every year from 1980 to 2014, though it's dropped a bit in popularity. It's familiar, yet would add a worldly touch to a basic surname.

In the early eighties, Lindsay, in tandem with Courtney, approached the Top 10.

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".

Though Shelby was trendier ten years ago, it's still a widely used choice.

One of the first luxury brand names and the quintessential Booming Eighties status-conscious moniker; used by Donald Trump for his daughter, Tiffany has plummeted far from its high in the Top 25.

The second most popular spelling of this name is also the most straightforward.