http://www.deseretnews.com/top/686/0/All-time-list-of-returned-LDS-missionaries-in-professional-sports-.html
It was compiled last year so should contain practically everybody.
For football players, my order would go as follows (I am projecting current players as well, which is why they may be above other players that have better stats):
Bart Oates - 5 time pro-bowler
Chad Lewis - 3 time pro-bowler, 1 All-Pro selection
Vai Sikahema - 2 time pro-bowler
John Tait - 10 year career, started practically every game
Rob Morris - 471 tackles, 7 sacks
Paul Kruger - 69 tackles, 15.5 sacks
Dennis Pitta - 102 receptions, 10 TDs
Kevin Curtis - 252 receptions, 20 TDs
Austin Collie - 173 receptions, 16 TDs
Ryan Denney - 270 tackles, 21.0 sacks
Sione Pouha - 263 tackles, 4.5 sacks
Brady Poppinga - 307 tackles, 5 sacks
Itula Mili - 10 year career, 164 catches, 13 TDs
Chris Hoke - 83 tackles, 2 sacks
John Beck
The rest