No info yet
I think there are also hidden -a names for boys that are rising in popularity, from Noah and Micah to Elijah and Zacariah (okay, I guess -ah is the only variation I'm coming up with!).
I agree that The Hunger Games probably had a lot to do with Gael's rise.
I would bet that Jase's rise was influenced by Teen Mom's Jace, Janelle's son.