Wandy has said he would be a bartender because his father owned a bar.
Forrest would still be a cop
Jon Jones would probably get a job as some assistant on one of his brothers football teams. He has mentioned many times how he fails hard at traditional sports.
Lyoto would be a karate teacher
GSP would either be a councilor or teacher
Korean Zombie would have a reoccurring role as 'The unkillable Zombie' on The Walking Dead
Lesnar would probably have gone back to wrestling sooner or became a wrestling coach.
Fitch would be a teacher and wrestling coach at a high school.
Kos would probably be a guy who tries to flip houses for profit, even in this economy.
Jardine would play 'random prison guy #4' in TV shows.
Rashad Evans would probably be working in upper management for a corporate company. I don't like him but dude is crazy smart.
Tito would probably be a wrestling coach.
Rich Franklin would probably be a principal by now.