Those interested in Sport in Middle EArth may like to look at the thread of that name which I have bumped up in Books - but it probabaly belongs here...
The Belfalas / Dol Amroth team would be the Swans
The Emerie (Numenor) team would be the Baa-Baas
The Misty Mountain Wargs..
The Dunland Crebain (sorry - can't resist the obvious
)
The Mordor Cats
Umbar.. has it's Corsairs, Harad the Wainriders...