With its cool -X ending, Jax is an update on the classic nickname Jack, likely inspired by the rise of Jackson. It garnered attention in the US thanks to the game, Mortal Kombat II back in the '90s, and was pushed up the charts when it was used in the show Sons of Anarchy, in which Jackson "Jax" Teller is the central character. 
 
Jax peaked in the US back in 2014 when it nearly reached the Top 200 and has since been on a slow decline. Across the pond in the UK however, it entered the Top 100 for boys in 2023.

Leo is a strong-yet-friendly name that was common among the Romans, used for fourteen popes, and is now at its highest point ever in the US thanks in part to Leonardo "Leo" DiCaprio.

Derived from the Latin meaning "lion", Leo is one of those names, like Luke and Finn, that many people assume must be short for something but that is authentically a complete name in its own right. That said, Leo can but short for any number of names, from Leonardo in Latinate languages to Leon and Leopold in Germanic languages. We've even heard of little girl Leonoras and Leonies called Leo: How cute is that?

Leo's simplicity makes it an international star, ranking in the Top 100 in countries as diverse as Ireland and Israel, Spain and Sweden, Austria and Australia. Leo is a truly diverse name, a perfect choice for any family crossing countries or blending cultures.
 
Leo's only real downside is its universal popularity and familiarity. If you call your child Leo, you and they will almost certainly encounter many other Leos over the years of all types and ages. Plus or minus? Or both?
 
Penelope Cruz and Javier Bardem called their son Leo, as did actress Kim Raver, NASCAR driver Jeff Gordon and Kristin Olson. 
 Famous Leos of the past include Pope Leo the Great, a number of early saints, and Leo Tolstoy, as well as Dead End Kid Gorcey, colorful baseball manager Durocher, influential gallerist Castelli and the leonine MGM icon. There have been Leos seen on everything from The West Wing to Charmed to Grey's Anatomy to Seinfeld's Uncle Leo. In 2025, this was the name chosen by the current Roman Catholic pope, putting Leo in the spotlight once again.

Noah is nearly a patriarch of popular baby names at this point, going from Old Testament graybeard to Top 10 name in 2009, hitting Number 1 in 2013, and now settled into second place in the US for the past eight years.

Noah was derived from the Hebrew name Noach, which itself came from the root nuach, meaning "rest," although some sources claim it can also carry the opposite meaning, "motion." In the Bible, Noah was deemed the only righteous man of his time, singled out by God to survive the great flood sent to punish the world. He built his famous ark, onto which he herded a pair of every animal.
 
A generation or two ago, Noah seemed far too antiquated to become a popular name. But now, along with brethren Abraham, Moses, and even Elijah, it's eminently baby-worthy. 
 
Noah's popularity is widely international, ranking highly in all English-speaking countries along with France, Germany, Italy and Spain. Noah is also a top name in countries as diverse as Belgium and Brazil, Norway and Chile.
 
Actor Rupert Graves and singer Michael Buble both have sons named Noah. Billy Ray Cyrus, responsible for the name Miley, crossed gender lines to call another of his daughters Noah. 
 
The feminine homonym Noa -- which isn't a form of the Biblical male Noah (it's a separate female name from the Old Testament) -- is currently the most popular girls' name in Israel. It is however the Welsh form of masculine Noah too, and as such, a Top 100 choice in Wales, making it a perfect legitimate spelling for boys.
 
With its soft sounds and vowel ending, Noah has also brought with it a number of gentler boys names, such as Asher, Ezra, Luca, Jonah, and Koa.

Noah

hannahbunn's list "First Boy Names" of 3 great name ideas: Jax - Noah!

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