Doomsday playoff scenario

BYU wins the Big 12 Championship edging Texas Tech

Michigan beats Ohio State today then beats Indiana in the Big 10 Championship

SMU and Virginia win today, giving the winner an automatic bid in the ACC CG

You could potentially have BYU, Michigan, the SMU/Virginia winner and the highest ranked G5 team all receiving automatic bids despite none currently being ranked in the top 10

Add in the SEC champ, either Georgia, Alabama or Ole Miss

So now you only have 7 spots available with only one current top 10 team guaranteed a spot

Who gets the at-large bids?

Ohio State 11-1 and Indiana 12-1 are locks as is Texas A&M 11-1 (despite not making the SEC championship game)

Now we have 4 spots left and here's where things get dicey

Oregon 11-1(assuming they beat Washington today), who didn't make the Big 10 CG?

The SEC CG loser (Georgia 11-2, Alabama 10-3 or Ole Miss 11-2)?

An 11-1 Ole Miss, who didn't make the SEC CG?

Texas Tech 11-2, who would be in as of today but a loss in a conference CG could knock them out?

Assuming the following teams win today ...

Notre Dame 10-2?

Oklahoma 10-2?

Vanderbilt 10-2?

Miami 10-2?

I understand the long odds of this hypothetical but it is a possibility

Even if none of this happens, there will be teams not in the playoff who would be capable of winning the national championship