No matter the formula the results are basically the same. There are 12 teams who have a shot at a title, they are the same 12 teams for the last 50 years and barring the occasional fluke, very rare. It's always the same 12.
Pretty much.
Yup
In no particular order: Ohio State, Alabama, Georgia, Clemson, Michigan, Oklahoma, Florida, Michigan, Texas, Notre Dame, Penn State, etc.
And there are always the outliers lurking like Wisconsin, FSU, Oregon, USC