This will probably be my last tier list unless another patch comes out or unless the meta shifts heavily. I filled my high tier a lot more than I have in the past because there are a lot of good characters in this game! Thanks for looking. Feel free to tell me what you would change in the comments.
Reasons: Little Mac: Meh neutral, no advantage state, disadvantage state = death. Lucario: WAY too inconsistent. Most characters will kill him before he gets good aura, and he has small hitboxes and awful damage output without aura. Dr. Mario: Once again, disadvantage state = death, actually has an okay neutral and and okay advantage however. He is incredibly slow, too. Ganondorf: Awful frame data and very slow, however his advantage state is actually above average as long as he can catch up to his opponent. Disadvantage is underrated, his up b travels pretty fast (Juggling still ruins him though). Jigglypuff: Small hitboxes, gets edgeguarded, and is very slow. However, neutral and advantage state are pretty good. Altogether very inconsistent. Incineroar: REALLY slow, has meh neutral and a good advantage state, but disadvantage = death again. Sheik: If Sheik loses stage control, she will almost definitely lose because all of her kill setups need to be near the ledge, and if you miss the window for nair to bouncing fish then you have to wait for a long time to kill. Good disadvantage, bad advantage and meh neutral. Bowser Jr: Exploitable recovery, gets juggled, slow, awkward overall. Isabelle: A trap character whose traps don't work. Exploitable recovery, has few kill options, slow. King Dedede: Bad frame data and easy to combo. His best move can be easily countered. Kirby: Slow frame data and very predictable. If he makes a mistake he gets punished hard. Can actually get edgeguarded. Ridley: Easy to combo and slow hitboxes, but is not actually a superheavy. Very awkward to handle. King K. Rool: Can get some good damage output, but has a bad disadvantage and can't push his advantage too hard. Simon: Great neutral tools, but disadvantage = death. Mii Swordfighter: Doesn't really have anything good, just completely meh everywhere. Donkey Kong: Amazing damage output, great advantage state, but has trouble with zoning and has an awful recovery. I will write more of these later. If I need to, I will add more reasoning.