The bots prefix is // and @Everything Bot. This bot was made in python. This bot has almost every command you can think of plus more. The command categories are Admin, AdvancedLock, AltDentifier, Application, Audio, AutoRoom, Away, Captcha, DankMemer, Economy, EventMaker, ExtendedModLog, FirstMessage, Fun, General, GameRoles, MemberCount, ModLog, Mutes, Reports, ReactPoll, ReacTicket, Warnings, and many more.
Upvote Everything Bot
This bot has every command you can imagine.
Check out the home page for the full Discord Bot List.