You can divide coaches into groups. Mine are:
1) Mostly clueless- Brewster- literally don't know the fundamentals of anything including recruiting
2) Great recruiters, don't coach, they are as good as their coordinators- Mack Brown, James Franklin, Ron Zook
3) great at half the game- need a great coordinator for the other half of the team. Mason, Wilson, Charlie Strong, Kevin Sumlin, probably TC which is okay because he knows it.
4) Great at fundamentals but can't get over the hump for some reason, frequently facilities, budget: Cal Stoll, Murray W, maybe Gutey, Joe Tiller, Joe Salem.
5) Good coaches and good people but just not tough enough for P5 football: Wacker,
6) Guys who are great at fundamentals for the whole program, building, hiring and motivating: Alvarez, Ferentz, Kill, Dungy in profootball, Randy Walker, Fitzgerald, Dantonio, probably most really successful coaches including Bielema ( I did not say they were great people although some listed are, and some just really know what makes good FB teams work).
7) Guys born on third who think they hit a triple; all of the Michigan coaches after Schembechler, all of the USC coaches after John Robinson except Pete C., most of the Notre Dame coaches in my lifetime other than Parseghian and Holtz.
8) Geniuses who can do everything: Saban
9) Nut cases who think rules should be different for them: Harbaugh, maybe Meyer
10) Chronic cheaters; Anyone who coached in the old South West conference successfully, anyone who succeeded previously at KY, Mississippi St, Auburn, Tennessee.