Ezra has a lot going for it: the strength of its heroic Biblical legacy, its quirky sound, and its fresh but familiar feel. Ezra is now at its highest point ever, but its intuitive streamlined spelling and deep roots could make it a worth successor to Elijah in the Top 10 -- or even to Liam or Noah at Number 1.

See the popularity graph below for the name Theo? It's been heading straight uphill since 2010, when it hopped back onto the Top 1000 after a 60+ year absence.

Samuel has been so popular for so long that it's hard to believe it's still climbing, at its highest point since the 1890s.

Isaiah, like brethren Isaac and Elijah, is a once neglected biblical name now firmly back in favor, already surpassing such long-popular Old Testament stalwarts as Aaron and Adam. Isaiah has ranked on the US Top 1000 list for boys every year but two, 1969 and 1970.

Now that such Old Testament patriarchs as Elijah and Moses fill the playground, Boaz seems downright baby-friendly, having more pizzazz than many of the others, perhaps as a successor to Noah.

Judah is the strong, resonant Old Testament name of the son of Jacob who was the ancestor of one of the tribes of Israel, and from whom the word Jew is derived. Some of the names' popularity might be attributable to the similarly named Jude Law.