Congratulations on your site! I haven't seen Doom Patrol, but your site design is so nostalgic, and I love how strongly your passion comes across.

zarla has a lot of fandom-specific websites, some of which have been around for over twenty years; they're listed here. I discovered her Pokémon site when I was a kid, and it was very influential in my development as a fan!

I've also got a couple of fandom-specific websites of my own: Balamb Garden, devoted to Final Fantasy VIII, and Silent Hill, devoted to Silent Hill 2. I only started getting into website making last year, but it's surprisingly addictive!

EDIT: Oh, and larissa has a bunch of gorgeous shrines that you can find here, mainly for Final Fantasy and Pokémon!