Beyhive, Navy, and Lambs are really good ones. Beliebers and Barbz are funny ones. Not sure how I feel about Monsters. I don't care for the Army's name, Katy Kats', or most of all the other stanbase names; they're really unoriginal.
Imma fess up - I don't get where the term Navy come from. Other than the Battleship movie, I don't know what the term Navy has to do with Rihanna. And I'm pretty sure that name was around before battleship was even announced. Someone enlighten me.