Scratching Ga Tech off that list this season. It's pretty amazing how many teams, in 100 years of football, who we haven't played. Lot of Pac-12 teams. Understandably so given the travel involved. Anyway, here's the list. P5 schools only.
Iowa
Michigan
Minnesota
Nebraska
Northwestern
Wisconsin
Iowa St.
Texas Tech
Arizona
Cal
Colorado
Oregon
Stanford
UCLA
USC
Washington
Washington St.
Arkansas
Ole Miss
South Carolina
Iowa
Michigan
Minnesota
Nebraska
Northwestern
Wisconsin
Iowa St.
Texas Tech
Arizona
Cal
Colorado
Oregon
Stanford
UCLA
USC
Washington
Washington St.
Arkansas
Ole Miss
South Carolina