Reclaim the Records and I do a loooot of the same work but it's separate enough that we don't really interact much. But I'm a big, big fan of their work and have had a couple light chats with the founder a couple times. She's great and yeah, wonderfully aggressive. Her work's the sort of foundational work that enables so much.
Muckrock and I go back quite a long way! Sending about 200 requests through them later this month :)