So mastodon.world, calckey.world and lemmy.world are all run by ruud and looking at mastodon.world it states they have 3 admins in total. So 2 besides ruud. And i assume the same group is involved in all of these.
This is just what i managed to figure out before joining lemmy.
Bill is paid by using donations through open collective and Patreon:
https://opencollective.com/mastodonworld
https://www.patreon.com/mastodonworld
Which is confirmed in their blog post about Lemmy:
https://blog.mastodon.world/
So mastodon.world, calckey.world and lemmy.world are all run by ruud and looking at mastodon.world it states they have 3 admins in total. So 2 besides ruud. And i assume the same group is involved in all of these.
This is just what i managed to figure out before joining lemmy.
Also !lemmyworld@lemmy.world might be a good follow.