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.

More creative and artsy than Mario. Dario is starting to edge up the US popularity list after languishing near the bottom of the Top 1000 over the last four decades. Is that inspired by Dario's popularity in Italy, Spain, Germany, and Switzerland?

Azariah is a rarely used biblical name that moves way beyond Adam and Abraham; its pleasant sound makes it no surprise that parents have discovered it in recent years.

Celebrated in song—the rock 'n' roll classic "Louie, Louie"—this is a gregarious, friendly spelling of Louis not often used as a full first name. It reentered the US Top 1000 in 2015. It's a highly popular choice in England and Wales.

Brock is a rock solid name, with a touch of preppy sophistication. It ranked solidly in the 200s-300s from 1975 until 2014, but has since tumbled a bit.

Gone with Richard and Rick, Ricky has been falling since the turn of the 21st century. Probably still suffering from overuse in the 1990s.

A perfectly respectable Old Testament name ruined forever through its association with the odious Uriah Heep in David Copperfield. Some people also find this name just too close to the word urine. These negative connotations may be wearing off, however. (Perhaps because people don't read as much Dickens as they used to.)

Jedidiah, an Old Testament name with a touch of Gunsmoke-era western panache, is right in line to be revived along with the other biblical -iah names.

Gwyneth Paltrow and Chris Martin's choice of this white-bearded Old Testament name helped bring it into the modern age, along with brethren Elijah, Isaiah and Isaac. User-friendly nicknames include Moe and Mose.

Chosen is officially a baby name thanks to Carolina Panthers quarterback Cam Newton, who chose (can't resist) the word as the name of his newborn son.

A popular choice back in the 50s and 70s, Rocky fell into decline after Sylvester Stallone's battered but not beaten boxer character became the overwhelming association many had with the name. Now, nearly five decades on from when the first Rocky movie was released, this tough yet playful name is back in style, ready to forge an identity of its own. Given to around 420 boys in the US in a recent year, it was one of the fastest rising names in the charts.

This variation of Wesley moved into the Top 1000 among boys' names in the US in 2016, perhaps because it makes the name more Western, with the cowboy nickname West., or because parents have taken inspiration from the protagonist of the movie The Princess Bride.

Izan, pronounced with the same vowel sounds and emphasis as Ethan, ranks among the Top 20 boys' names in Spain, where it's been popular for two decades.

Matthias is the ancient Biblical form of Matthew, widely used along with brother Mathias in the US for the past 20 years.

Ignacio, like Horacio, makes its gray-bearded English equivalent name sound positively dashing. While the Ig- beginning summons up such associations as ignoble and ignorant, the era for Ignacio and Ignatius and Iggy may be nigh.

A name introduced here by The Godfather: James Caan played the anything-but-saintly Santino "Sonny" Corleone, and comedian Adam Carolla used it for his son.

Emiliano is an appealing Latinate version of Emil, with the same gentle sounds but additional flair. Popular in Chile and Mexico, where it ranks in the Top 20, Emiliano is also a rising name in the US.

Given that Rome is arguably the most important city in European history, it has been used as a first name remarkably little. However, with Roman in the Top 100 and one-syllable choices in vogue, it was only a matter of time before parents started looking toward the city's name as a potential baby name.

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.

An international take on Theo that would be easily wearable for a child in the US or any European culture, Teo is a simple but versatile choice. It's popularly used across a number of countries, including Georgia, Poland, Slovenia, Slovakia, Croatia, Czechia, Italy, England, and Bosnia and Herzegovina too.