and only a few. College backs are notorious for their lack of pass protection. College coaches just don't prioritize it. That said, a few guys:
Dobbins - for a 209 lb back, he sticks his nose in there. He's not my any means perfect at it, and he will miss blitzers, but its for a lack of effort.
Taylor - big back and a decent pass protector. Also a willing blocker. Should translate well to the NFL IMO.
Helaire - he has flashed the ability to do it, just never was asked to do it much.
Benjamin - surprisingly good at pass pro, although bigger rushers are going to give him a hard time.
Dillon - at 250 lbs, he holds up well.
Perine - not too bad at it, very willing, just really needs practice at it IMO.
Robinson - he was literally everything for Ill. State, so he pass blocked, and did a great job in it.
Don't waste your time looking back, you're not going that way. - Ragnar Lothbrok