Greatest College Football Team Ever to not play in National Championship

Outside of the team's fans, so many great teams are forgotten because they never reached the national championship game. From what I can recall, I believe the best team ever to not play in a national championship game was the 2017 Oklahoma Sooners.

23% of that roster is currently in the NFL with two #1 overall picks, 5 first rounders and two Heisman winners. Their lone regular season loss was a stunner against Iowa State in Norman, losing by 7.

They were 2nd in total offense and 3rd in points per game.
Who do you think is the greatest team to never play in the national championship?