I don't follow the NFL. I find it boring compared to college ball. Reasons: I much prefer college rules, greater variety of offensive formations and overall game day atmosphere. That said, this morning's Plain Dealer showed draft selections for rounds 4-7. I saw quite a few players taken from non-P5 schools. Not sure if the number this year is more or fewer than previous years. Here are non-P5 schools that had players drafted:
Delaware State, Texas Southern, Southern Illinois, Chattanooga, North Dakota State, UAB (2), Tulane (2), Navy, Texas State, Delaware, Illinois State, Towson, Tennessee State, Central Michigan, Lafayette, Buffalo, Southern Miss, Monmouth, Northwestern State, Eastern Washington, Hawaii, Newberry, Northern Illinois, William & Mary, Marshall, San Jose State, Mars Hill.
It would seem that NFL teams continue some pretty deep scouting.