Vinland, Oblivion Battery and Ranma teams have been by far the ones with the healthiest production. Really consistent and the highs are fantastic. Vinland most especially.
Also, the ones assembled by Takahiro Ogawa. These are above average looking shows like Campfire, Kakegurui and Bucchigiri!? as examples of shows.
Since AoT is finally done, Masato Matsunaga and Wataru Kawagoe teams should be in a better shape. Jigo S2 should look better then S1. But more curious how Lazarus and Dororo S2 look.
Keisuke Seshimo's teams will always look the best, but god, this is where Mappa gets greedy. It makes sense to put your best anime producers on your big series. But not at the expense of the quality of the product and/or your staff's mental health. You literally had JJK animators working on the CSM movie while Shibuya was airing.
I do hope Umehara's production line in Cloverworks doesn't suffer a similar fate since Elusive Samurai S2 hasn't been confirmed to air next year since they will be working on Dress Up Darling S2 next year. (At least Bocchi the Rock is back shelved for now.)