Umm, you kinda have a survivorship bias in how you selected your sample.
By only considering schools that are, using your words, "looking for an OC at this moment in time," you are necessarily excluding schools that have fired and/or otherwise lost *and already hired* the replacement. E.g. the nubs.
And for the ones you list as "open," you're not considering the date at which they are "open" and/or any sort of hiring process could begin, even the first two on your list show the error in that approach: LSU - their OC search didn't/couldn't start until they got the head guy in place. And Miami? ****, I don't think the new HC's contract has even been printed, let alone the ink dried - ditto with Oklahoma.
Realistically, the Miami and OU jobs now being open shows one of the problems with being slow to hire. Ten days ago we weren't competing with them for an OC, now we are.