There are interesting stats like;KOC should probably move to the booth.
An offensive play caller / head coach hasn’t won a national title since Jimbo fisher
But then you have to consider here are the coaches who have won national titles since jimbo fisher:
Urban Meyer who didn’t call plays but did when he wanted to
Nick saban
Dabo swinney
Ed Orgeron
Kirby Smart
Jim Harbaugh who didn’t call plays but did when he wanted to
I’m not sure that stat tells you much other than college football is dominated by a few coaches and programs who don’t happen to call the offensive plays