One major reason:
Women in red states tend to have their first children earlier than women in blue states. A 23-year-old mom is more likely to come up with something out of the ordinary than one who is 33.
The fastest rising names nationwide?
Briella, which jumped 394 spots, to No. 497. Briella Calafiore stars in "Jerseylicious," a reality TV show about battling stylists at a beauty salon in Green Brook, N.J. She's also in a spinoff called "Glam Fairy." Brantley was the fastest rising name for boys, jumping 416 spots to No. 320. Brantley Gilbert is a singer who had a No. 1 country hit called "Country Must Be Country Wide".
[Apologies for the original "so unique."] Update from a reader:
There is a little girl in my son's kindergarten class named "Sounique", pronounced "so unique". So when I saw your apology for the "so unique", I thought for a moment that you were talking about a child's name.