Burrow? I don't think he's to the point where he should be considered generational, but there were many, many people who thought he'd be a very good NFL QB. He looked and played like a vet NFL QB in his last year at LSU.
I use that guys link because he included so much information. Just last few years, the talking heads were telling us that Tua, Bryce young, and now Caleb Williams were generational QBs. Meanwhile, the best 3 QBs of the last 5yrs, are Burrow, Herbert, and so far CJ. No one said any of them were generational QBs.