Arguably not anime bc it's a Chinese production, but I'm really enjoying To Be Hero X atm. Honestly the narrative structure is really interesting- jumping around the different hero's backstories should work against it, doubly so because it feels like a prequel to something, but it's cohesive enough that I'm really enjoying it nonetheless, and they've dangled the mystery of how the current X rose to power despite being completely unknown as something to build towards.
I also like the kinda meta post-superhero spin it brings. I'm also watching The Boys atm lol, so I'm consuming a fair bit of that stuff I guess