nostr:npub1s3ht77dq4zqnya8vjun5jp3p44pr794ru36d0ltxu65chljw8xjqd975wz for publishing and archiving all the things on relays. A true library in cyberspace.

nostr:npub1jlrs53pkdfjnts29kveljul2sm0actt6n8dxrrzqcersttvcuv3qdjynqn for bringing meat-space communities to Nostr through Flotilla.

nostr:npub1syjmjy0dp62dhccq3g97fr87tngvpvzey08llyt6ul58m2zqpzps9wf6wl for making relays the focus again with Jumble, and for making them dead simple for ANYONE to run with Nostr Relay Tray.

Those are who I can think of right off the top of my head. There are plenty more that are building incredible things, too.