I've tried. Check how large the list got before I completely blocked the domain a couple years ago. And it STILL let stuff through, as they constantly add more crud that infests the pages. The focus isn't on the content, it's on the revenue... and they push hard on the revenue. I bet every single module has an extensive list of trackers attached.

! https://*.fandom.com
fandom.com###WikiaBar
fandom.com##.mcf-wrapper
fandom.com##.wds-global-footer__main
fandom.com##.message
fandom.com##.global-navigation__top
fandom.com##.is-visible.fandom-sticky-header
fandom.com##.wds-global-footer
fandom.com##.page-side-tools__wrapper
fandom.com##.featured-video__wrapper
fandom.com##.discord-module.rail-module
fandom.com###mixed-content-footer
fandom.com###SurveyModule
fandom.com##.global-navigation
fandom.com##.wikia-bar-anon.wikia-bar
fandom.com##.mw-parser-output > div:nth-of-type(2)
fandom.com###highlight__main-container