Tyrion must represent the last decade. Academically still formidable, but you don't want him on the battlefield.
After thinking about it, LSU is definitely the (Jon) Snow of the league. He tries to do the right thing, everybody knows they need him around, most people like him, but in the end they always kick him out beyond the wall and tell him how grateful he should be for it.
Tennessee is House Tyrell. A proud name and glorious past, but nobody takes them seriously.
OU will be House Targaryen. A legit dominant past with a claim to greatness, but while they demand others bend the knee, nobody's listening and nobody wants them in power again.
