@Curator @Algot Starfleet is an autofollow bot, but it also honors the #nobot flag and responds to commands to unfollow (if you dm it to unfollow you it will do so). Does that not follow your rules?
As for the other two bots, as I said, they do not follow anyone under any circumstances, so no need to block them. Also all their posts are unlisted so they wont even show in your federated timeline if they are followed.