Lots of good music there, but as you move forward chronologically, there are more musicians I haven't heard of, or some that I've heard of but never heard (a few like Mott the Hoople I've heard one or two songs).
Uriah Heap is one of those whose name I know but whose work I'm completely unfamiliar with. So it might as well be them for worst best, but I have a suspicion that if I listened to them today and if they weren't too pretentious or inept, I'd consider Yes or Genesis for the "prize." The Kraut rock is probably good, as are the Brazilian choices (lots of both), and the Italian prog is highly regarded by fans of the genre. I'm suspicious of Larry Norman (early Christian rock), but don't know him either.
I can't believe Pink Moon is 49 years old. It's as fresh as when it came out.