I had another response for this talking about why I dislike a certain part of the fandoms mentioned, but I think it's too long and negative for a question as simple as this (I don't think I was very coherent either)
Favourite is Omniscient Reader's Viewpoint (The side that isn't the TikTok side, at least)
Least favourite is Jujutsu Kaisen (I've associated with the fandom, unlike with Danganronpa and MHA, which is why neither of them are the least favourite for me)
I saw someone mention Alien Stage and honestly, I can agree with the point mentioned, the TikTok side strikes again, unfortunately (I know certain fans are like the TikTok side despite never being on TikTok, and vice versa, it's just more likely to be the TikTok fans, or so I've observed)