I dunno much about the indie wiki scene in general, but I discovered www.wiki.gg when the Helldivers 2 wiki moved* there, and it's really a breath of fresh air. One banner ad at the top of the page, one at the bottom. And that's page, not screen, you can scroll away from it and it won't follow you. I hear it's better for wiki admins, too, though I don't know the details. Quite a few pretty high-profile wikis seem to have relocated there.

* Okay, most of the editors moved there, and apparently the ones that stayed on Fandom have developed a siege mentality and started banning anyone who mentions the new wiki on their Discord. It's very strange. Fandom is worse in every possible way, where's the loyalty coming from?