I'm not going to attempt to name them all, but at least recently:
Kaufusi - Ziggy, Fangupo
Poppinga - KVN
Tidwell - I think Nixon was the last ILB from BYU?
Howell - Sorensen
So, if those coaches helped develop those players - do they just decide not to develop other players? Or is there something besides "player development" by position coaches that is a bigger impact on whether or not you get an NFL roster spot?