One name that has a 0% chance, but I would love to hear is Major Applewhite. He’s just hiding in Alabama as an analyst. He had Houston top 25 and top 10 in offense in his 2 seasons calling plays for them and even though he couldn’t cut it as a head coach for them, he’s young enough where a successful stint as an OC would take him back to be a HC again somewhere. He has coached under Herman, Saban, Todd Graham, and Mack Brown who all are offensive minded.
I think the only major school giving him a look at OC is Arkansas.
In addition to being a Husky alum, I am a Texas Ex. Major Applewhite is a trash human being and a pretty mediocre OC. Hard pass.