Day has something like the third highest winning percentage of all coaches with something like 60 games under their belt. This year he beat something like 5 out of the top 6 teams. In 2022 after Marvin Harrison was knocked out of the game, he lost to a stacked Georgia team by one point. Has made the college playoffs multiple times. Is Michigan record is a detriment, but it doesn't overwhelm as many achievements at Ohio state. In fact, in the six years he has coached, he has two Big ten championships in Michigan has four which is not horrendous.
Additionally, he probably has the best staff of any college football program. Chip Kelly, Brian Hartline and Jim Knowles are clearly elite. James laurinaitis did a great job with the linebackers this year and Tim Walton has been recruiting great defensive backs.
I would rate Ryan day as maybe the 3rd or 4th best coach in college football. The top coach comes to mind is Georgia's Kirby. But other than that I am curious who people here would place ahead of Ryan Day.