Even some of these are debatable, I guess. We don't know how relevant the Kang setup will be, so it's possible that Quantumania could end up being completely pointless. I'm going to include it for now though since it seems unlikely that they would just pretend the Kang stuff never happened. I'm sure it'll at least be referenced.
So far, these seem to be the only must-see projects before watching Doomsday and Secret Wars