These are the users who started this place up and also keep this place running!
Administrators are users who are people that are just under owners, they handle keeping the staff team in check and can do all the things other staff members can do.
Developers add new features to the server, squash bugs, keep the server up and running and take care of its maintenance.
They don't do anything related to the community. Developers have a blue name in the in-game chat.
Beatmap Nominators play beatmaps in the ranking queue and decide whether they are good enough to be ranked or not.