I took the time create a set of XMPP/Jabber MUCs (Multi-User Chats aka Chatrooms) and linked them up with the Discord channels with a matterbridge bot.
Anyone is welcome to join!
Rules are the same as the Discord side. Some rooms are Discord exclusive (creeperslab & nsfw-slabafterdark). This is for people that prefer not to use Discord for one reason or another. You can also join from Matrix.
That link will take you to the main chatroom. The subject contains the rules. Read through the rules to find the links to the other MUCs.
EDIT: I setup my own XMPP/Jabber instance at jabbering-queer.net and moved the rooms over. You can join it from any XMPP/Jabber instance. If you want an account on my instance, message me here or one of the ways below