This is interesting, and somewhat likely. I start with the undefeateds, and review who they've beaten, then look at how far above in the final official poll they are, from the first 1 loss team.
Right now, if UGA were to win out, then lose to Alabama, Cincy would move to #1, assuming they are still undefeated, and I think they will be. They are IN. They get in not bc of the strength of their schedule, but because they won all their games, and they are several slots ahead of the next one loss team.
Right now, if Oklahoma wins out, wins their conference, they are IN. Again, not because of the strength of schedule or margin of victory, but because they are undefeated, and they sit a spot or two above the highest ranked 1 loss team. Which would be:
Now, we get to the 1 loss teams scenarios. If Ohio State wins out, and assume they are ranked 3, 4, or 5, because UGA isn't going to fall far should they lose to Alabama (which I do not think it likely they lose to the Tide, sad to say), then Ohio State is the next team in line around Georgia, either a spot above or a spot below. So, I take Ohio State.
Now, the UA/UGA winner: what to do? Assume both would have 1 loss, and Alabama the conference champion. I feel compelled to honor the conference title of the SEC, with a single loss on their record, to a good team, possibly highly ranked Texas A&M.
So, in your scenario, my CFP is 1 Cincinnati, 2 Oklahoma, 3 Ohio State, and 4 Alabama. Georgia, by virtue of that 1 loss and not being the conference champion, but losing it as the last game of the season, is left out. It doesn't seem "fair" to the great team that UGA is, to leave them off, but it strengthens the case for an expanded playoff, which I'm indifferent about. I actually think that my 1 and 2 is going to happen. Easy peasy. But, I feel like OSU and Alabama both are not their best versions of themselves, and will not win their respective conferences. So, I'll keep Georgia as it stands today, as the most realistic 1 seed in the CFP, then Cincy, then OU, and #4 is literally anyone's guess. The Big 10 is far from settled. The PAC 12 is a long way away from having one of their conference champs actually be ranked anywhere near the top 4 teams. The ACC is an afterthought, and Wake Forest may argue that they are deserving, should they run the table and win it, which I also don't think is likely.
Per usual, this stuff comes into greater clarity in the last month of the season.