ASAN: Autistic Self Advocacy Network
taking this idea from a comment by tarrenvane on the "Remove hate groups" idea. it would be better optics for twitch to remove autism speaks from this feature and put this one in its place. from the about page at https://autisticadvocacy.org/:
"The Autistic Self Advocacy Network seeks to advance the principles of the disability rights movement with regard to autism. ASAN believes that the goal of autism advocacy should be a world in which autistic people enjoy equal access, rights, and opportunities."
i believe ASAN is US-based judging by their mailing address being in Washington, DC.

Hello! The Autistic Self Advocacy Network has been added to list of charities. To learn more about charity on Twitch, check out https://link.twitch.tv/TwitchCharity. Thank you so much for requesting this charity and allowing us to help you support the causes you care about.