Oklahoma quarterback Dillon Gabriel is ranked first or second, depending on which ranking of the top returning quarterbacks in the Big 12 for 2023 you refer to, but when you broaden the scope to the best returning signal callers nationally, the Sooner QB drops down precipitously.
Granted, Gabriel may not have had his best performance last season, but it was still a pretty darn good one. Despite having one of the worst defenses college football last season (122nd out of 131 FBS teams), the OU offense, with Gabriel at the on-field controls, still remained highly potent (13th in total offense).