Michigan, Ohio State, Penn State, Alabama, Auburn, Georgia, Tennessee, USC, UCLA, Nebraska, Texas, Oklahoma, Wisconsin, Florida, Florida State, Texas A&M, Iowa, LSU.Not true if you consider a helmet to be part of the uniform. Go to The Helmet Project and look at the BCS conference school members. You'll see that around 10 schools meet the criteria and you only get that many if you ignore one off Pro Combat looks like the ones OSU breaks out or minor tweaks to the logos (for example: USC). The group of truly traditional schools uniform wise is actually really small.
I guess I can only come up with 18 off the top of my head, but all of those schools have the same uni's now as they did 20 years ago (some with minor changes).