To me, since about 5 weeks in, it's been pretty clear who the real four most talented teams are this year: LSU, Clemson, Alabama and Ohio State hard stop. The likely best playoff games would involve them, regardless of conference alignment. That said...
If Baylor, LSU, Clemson , Minnesota, and Alabama all win out, Alabama will be left out. And that would be the right call. They had their shot. Sometimes the schedule isn't fair. A bunch a people claim SEC bias, but no Committee will actually have the stones to leave out an undefeated P5 Champion, until we actually get a year with all 5 or 4+ND being undefeated and someone has to go. Something something my own piss something something. And if for some reason it does happen I promise this, it'll be the end of the 4 game playoff as we know it and they will take it to 8 ASAP, because no p5 conference is going to stand to have their 13-0 champ not get a spot at the table...
They may leave out a 1-loss conference champ for Bama or a similar team, but it will not happen to an undefeated p5 champ.
The playoff rankings with a 1/4 of the season left are what the are. A TV show.