I consider MSU, PSU, Michigan, and OSU to be the top four in the East. They are interchangeable in my mind as far as defining a tough crossover schedule.Well the last time Iowa played Michigan, Ohio St and Penn St all in the same year was a year before Nebraska joined the B1G and Nebraska has played them all 3 twice and in 2024 they are all 3 on the schedule again, and the B1G has never given Iowa all 3 of these teams in the same year..
Iowa has the tougher schedule this season and next as far as crossovers. 2021 Iowa gets the easier crossovers and then it’s back to Nebraska having the easiest in 2022.