Back from Diablo 3 on Switch. Great game. No microtransactions unlike the PC, all DLC, and Witch Doctor class is hilarious! :D
I've seen later tier lists and I still find some placements questionable. Mostly the heavies, again. And the thing about tier lists, as I keep saying, and as most people say, is that like
channel_KYX
said, people go by what the pros say without specifics or details or anything. And while the details that even pros give are incomplete, especially now early on in Ultimate's lifetime, tier lists are being used as a substitute for critical thinking about your characters or other characters. For example, Little Mac being bad, while I would agree he's the worst character, is not a hopeless case. His recovery, while pretty bad, is actually so much better and more varied than the last game that simply putting him offstage without chasing is not going to work anymore. On top of that, if you have a character that is higher up that relies on "outboxing" the opponent, a good Little Mac will just win, because he's meant to outbox boxer archetypes like DK and Mario, so him being the worst character in the game means little when he still can cause you a world of pain.
This is why I encourage anyone creating tier lists to not use all letter grades available. Really, there is NO F tier character in Ultimate, that much is certain. The lowest is definitely C, MAYBE C-. But this lettering causes tier list makers to explain what they consider their tiers to be, thus creating a discussion for both veterans and newer fans trying to get into competitive.
In short, tier lists are a horrible shortcut to conclusions without nuance when they don't have to be.