Not sure if the list is supposed to only be accounts that moved from another service to the Fediverse completely, but some other notable accounts/organizations on the Fediverse that I can think of off the top of my head:

[–] [email protected] 15 points 2 years ago* (last edited 2 years ago)

Neil Gaiman is also on mastodon (and it wouldn't surprise me if some of the other authors in his cohort are too) though his main social media for major interactions is still Tumblr (which depending on your opinion of the Good Omens fandom, is either a blessing or a curse)

[–] droans 8 points 2 years ago (2 children)

social.bbc

Yeah, you're not gonna trick me into clicking that link.

[–] AndreyAsimow 1 points 2 years ago

(☞ﾟヮﾟ)☞

[–] [email protected] 1 points 2 years ago* (last edited 2 years ago)

Honestly questioning why I even mentioned the instance name, I should've saw this coming