I keep thinking of Alan Cockrell. But the QBs in Heupel's system don't tend to throw a lot of INTs. So I share your hope that he'll learn to avoid those.
If he can't, we still have Merk.
I don't know how you quantify "made it nationally," but I certainly wasn't familiar with him in relation to any Iron Bowl games. I looked at his Wikipedia page and there's no mention of it there, so I still don't know.
I know there were a lot of people who weren't familiar with him when it was...
Any list like this is just silly and bound to have bias in it. This one could be picked apart for any number of reasons, but zero Tennessee players and NINE Oklahoma State players being in the Top 100 is enough to dismiss it completely.