FWIW an 8-team playoff with 5 P5 champs, 1 G5 champ, and 2 at-large bids would have looked like this:
1-Alabama
2-Clemson
3-Notre Dame
4-Oklahoma
5-Georgia
6-Ohio State
7-UCF
8--Washington
Alabama vs. Washington
-
Oklahoma vs. Georgia
--
Notre Dame vs. Ohio State
-
Clemson vs. UCF
1-Alabama
2-Clemson
3-Notre Dame
4-Oklahoma
5-Georgia
6-Ohio State
7-UCF
8--Washington
Alabama vs. Washington
-
Oklahoma vs. Georgia
--
Notre Dame vs. Ohio State
-
Clemson vs. UCF