Katsumi Ishizuka popped off.
Holy shit, this may just be his best scene ever, not just in Wano, and this was the animator who handled stuff like Luffy's storm against Crocodile and his jet Gattling against Lucci. What an evolution.
Put in the matrix memes bois, his becoming the one.
Katsumi "GOAT" Ishizuka
Aside from that Mitchell Gonzales and Tetsuro Nireki also popped off. Luffy beating up that gifter was actually really well animated. I do love the fact the anime is incorporating more web gen animators, as well as some animators adopting a more modern style in terms of timing. Even if you didn't particularly like Luffy's filler fight, I think it was hard to deny it was at least very well animated.
Mitchell Gonzales
Tetsuro Nireki did an insane amount of work this episode, handling a huge portion of both Zoro and Luffy's fight. Although I think he did great in both scenes, I think I prefer the weightiness of everything in his Luffy scene. His Zoro scene is also incredibly ambitious, but I think some of the weightiness in the action was lost in the swordplay. It is harder to animate sword play than normal hand to hand combat.
Tetsuro Nireki
Tetsuro Nireki 0:00 to 0:35 Midori Uchimaya 0:36 to end.
EDIT: Midori Uchimaya, someone who actually did some decent action on 839 way back in WCI, actually did Gyukimaru intervening to Ishizuka's scene.