S: Steve, Sheik, Joker, Mr Game and Watch, and Sonic.
A: Kayzua, Lucas, Byleth, Wii fit trainer, Banjo and Kazooie, Fox, Hero, and Terry.
B: Sephiroth, R.O.B, Corrin, Yoshi, Sora, Snake, MegaMan, Duck Hunt, Ness, Min-Min, Kirby, Lucina, Mario, Pac-man, Dr.Mario, Zero Suit Samus, and Marth.
C: Donkey Kong, Mii Brawler, Link, Luigi, Daisy, Cloud, Ike, Grinija, Ice Climbers, Peach, Meta Knight, Charizard, Pit, Dark Pit, Young Link, Toon Link, Ridley, Rosalina, Ryu, Ken, and Isabell
D: Mewtwo, Dark Samus, Samus, Pikachu, Mii Gunnar, Bowser, Robin, Villager, Palutina, Shulk, Bayonetta, Captain Falcon, Bowser Jr, Zelda, Crom, Roy, Olimar, and Lucario.
F: Jigglypuff, Pokemon Trainer, Squirtle, Ivysaur, Simon, Richter, Wolf, Mii Swordsman, King K. Rool, Parana Plant, Wario, Inkling, Insinuator, and Diddy Kong
Just don’t use them, please, Ganondorf, Pichu, King Dedede, and Little Mac