Transfer portal was also crucial for them. Not sure they are in the same position without it, they completely shored up their OL with experienced proven guys from other schools instead of having to plug in generic younger 3* recruit and hope they worked out. Also had a couple of good defensive contributors and Barner who is a stud blocking TE from the portal.
Unlike in the past mostly, A team like Michigan who doesn't recruit in the top 5-10 every year can absolutely win it all now with that little boost they can get from the portal.
I posted this somewhere the other day:
1. Top-end HS recruiting, supplementing with portal to fill needs, great developers, lose a lot each year but retain those that matter - this allows for consistent winning - reloaders, not rebuilders. Bama, UGA, tOSU?
2. Heavy emphasis on portal, poor HS recruiting - Colorado - no chance of success.
3. Decent top-10ish HS recruiting, heavy portal - ATM, Miami, FSU - don't think you can build the culture needed to win consistently.
4. Decent 5-10-ish recruiting, portal to fill holes, able to develop and retain talent so you have have a cycle of very experienced seniors - UM, maybe UW - chance to cycle to a NC, but not sure about sustained success.
Coaching matters more than anything. Good evaluators, good developers. Can build a culture. Decent to elite game coaching, knows how to build a staff.
With the 12-team CFP, and expanded SEC and B1G, you will see a lot of teams cycle in and out of the CFP-12. A school like OkSU, Baylor, ISU, Iowa, Ole Miss, Whisky will get in a couple times a decade. A school like NCSU, NW will get in once a decade.
Those in no. 1 above are reloaders and they will be in 8-10 a decade.