Here are the full red zone stats from last season: http://www.cfbstats.com/2018/leader/national/team/offense/split01/category27/sort05.html
Wisconsin was solid, ranking 23rd in TD rate inside the 20. However, the best team in this regard was UCF (whose offense is nearly identical to OSU's) while Washington State (4th) and Clemson (6th) show that bigtime spread teams can still get it done close to the goal-line. Navy and Air Force are also extremely efficient inside the red zone, and while most people think of their style as physical because of all the running, the flexbone is really the ultimate finesse system. Pure smashmouth football doesn't seem to be the key to success down in short yardage, but rather showing multiple threats and executing.