Kai is an internationally flexible name with many possible origins and meanings, growing in popularity in the US and a diverse range of European countries.

Zoey is a modern spelling variation of Zoe, the Greek Jewish translation of Eve. For a few years, it was even more popular than the original Zoe, but has now dropped back to the second-ranked spelling — not by much, however. In a recent year, Zoe ranked at #29 in the US, which Zoey featured at #59.

Nadia, an accessible Slavic favorite, has a strong run of popularity in the US in the early 2000s, partially thanks to the character on Lost called Nadia but actually named Noor, but it's since slumped down the rankings. An earlier inspiration was Romanian gymnast Nadia Comaneci, who won the 1976 Olympics.

Widely used across Europe as a common baptismal name symbolizing spiritual rebirth, Renata, in this country it has an operatic image via Italian-born divas Renata Tebadi and Renata Scotti.

Somber, almost mournful name that still has a lovely sound. Neither really in nor out, Maura has played around at the lower half of the Top 1000 since the late 1940s. It might make one of those golden choices that are familiar without being too popular or two rare, the perfect honor name for an ancestral Mary.

Stalwart Italian classic, completely at home in this country.

This cool, sauntering boy's name would fit in and stand out in a classroom today. Other similar diminutives more distinct than Xander or Zander include Saunders, Sander, and Sanders.