Chad Morris is a great coach and has resurrected SMU Football. He was hired out of the HS ranks by Todd Graham.
LSU was a recruiting juggernaut under Les Miles because of Frank Martin. ASU played UTSA last year and they were a very well coached and well prepared team.
What Bronco did at BYU was also very impressive. What he's doing (so far) at UVA is even more impressive.
I would add David Cutcliffe and Scott Frost to the underrated list.