Willie Smith. Look him up.
Pete Banaszak
Chuck Foreman
Dennis Harrah
Lester Williams
Burgess Owens
If you go back to the 30's-50's you have even more with Jim Dooley, Don Bosseler, Al Carapella, and a bunch more. The heyday teams with Ottis Anderson, Bubba Franks, Brett Perriman, and Eddie Brown don't nearly get their dues because so many great and usually better players have played their own positions. There's a ton of underrated guys but with our history some guys are going to get overlooked.