Last 20 years, not including G5 or recently moved up P5, by winning percentage (traditional "helmets" in bold):
1. Ohio State
2. Oklahoma
3. FSU
4. Georgia
5. LSU
5. Oregon
7. Florida
8. Virginia Tech
9. Wisconsin
10. USC
11. Texas
12. Nebraska
13. Alabama
14. Michigan
15. Miami
16. Clemson
17. Auburn
18. Kansas State
19. Penn State
20. Tennessee