Schembechler is still to me one of the most overrated coaches ever.
Yes he had a good record - 234–65–8...
But his bowl record was 5-12 and he never won a national title.
Heck his best team was the 1985 team that beat Nebraska in the Fiesta Bowl 27-23.. and Nebraska wasn't even that good that year. (It was Steve Taylor's freshman year and our QB's were primarily McCathorn Clayton and Travis Turner)
Tom Osborne had about a dozen teams that would absolutely steamroll any team Schembechler ever had.
Also. Schembechler is famous for only winning fewer than 8 games once (He won fewer than 8 games in 1984 going 6-6 and he won exactly 8 games 5 times)... But Osborne NEVER won fewer than 9 games in his entire career and certainly never went. anywhere close to going 500 in any season.
Heck Schembechler LOST 4 or more games in a season 4 times at Michigan. Tom Osborne never in his career lost more than 3 games in any one season.
Fry had a fine career.. but at Iowa alone he went 143-89-6, went 6-7-1 in bowl games, won 3 Big Ten titles and zero national titles. Very good by Iowa standards, but not Elite.
Tressel only coached at Ohio State for 10 years, going a very good 94-21 overall, went 5–4 in bowl games, he won 6 Conference titles and 1 National Title. However he ended his college career at Ohio State in scandal.
255-49-3 (.836) overall, 12-13 (.480) bowl record, 13 Conference Titles, 3 National Championships. - All wins at Nebraska
229–79–2 (.742)
[ overall 5-4 (.555) bowl record, 6 Conference Titles, 1 National Championship. - went 94-21 (.817) at Ohio State
234–65–8 (.762) overall, 5-12 (.312) bowl record, 13 Conference Titles, 0 National Championships - went 194-48-5 (.795) at Michigan
232–178–10 (.552) overall, 7–9–1 (.428) bowl record, 3 Conference Titles, 0 National Championships - was just143-89-6 (.600) at Iowa
One of those is CLEARLY above the others.