Quakers are essentially anarchists.

They're the most organised one that you could call anarchists that I can think of off the top of my head.

My father's family were Jehovah's witnesses, definitely not anarchists, literally a cult of door to door salesman that figured out how profitable selling ideas instead of products could be.

But the scripture they actually follow seperates them a lot from mainstream Christianity, closer to Islam and Judaism.

All the pagan stuff that the Catholics added to Christianity is removed, anyway they do not respect the state.

Something about serving only gods kingdom, they refuse to go war, refuse to vote, mostly avoid politics unless it concerns religious freedom.

They actual organisation itself is totally corrupt though stay away from them.