Depends on what character types you like. Right now I am obsessed with golden kamuy. It's a wild west-like action comedy manga but taking place in Japan around 1910 and it's about war veterans. The manga just ended but the fanbase is huge and it gets a lot of fanart every day.
Mob Psycho (anime) is also very popular and the third season is airing right now. It's comedy action about occult shit and some wacky characters. Has a very simple art style too.
Ongoing cartoons that I see discussions of exist too like Owl House and such, but I haven't watched it (yet) so not idea how it is. The new Transformer cartoon also seems to be quite beloved and that franchise and its fandom are active since the 80s and never died. But I haven't watched that specific new series yet either.