UGA is in regardless. They would only lose their 1 seed if they lost the SEC CCG.
Michigan is interesting if they lose. I mean, a loss to unranked Purdue? Not likely to happen so probably not worth putting much thought to the scenario, but it would be interesting to see the committee handle such a bad loss this late. I would guess they'd remain ahead of 2-loss Bama and they would also remain ahead of tOSU, whom they just clobbered at their place, but you never know.
TCU is out with a loss. They cannot lose. The committee has been looking for a reason to downgrade them.
SoCal is out with a loss. A 2-loss SoCal will fall behind both tOSU and Bama.
That's on an individual basis. But what if they all four lose? SoCal would be out because of the 2 losses. I could see TCU remaining in as the committee might not want to make it an all SEC/B1G affair. However, I wouldn't bet the farm on it, as again, the committee has been searching for a reason to drop TCU. And again, UGA is safely in no matter what, and Michigan would also be safely in if all 4 lose.