Neither of those have working audio channels yet right?

As someone else said, stoat isnt federated. It also doesnt have E2EE. Meaning in practice, you are still using a centralized service that can enshitify. You could self host, but your friends aren't going to switch to your small self hosted instance if everyone is on the central server.

Or Matrix, which is federated.

I tried to set one up but a bunch of people had trouble even signing up. I'm finding Element (Matrix) is less troublesome so far.

You can self host Teamspeak and the self hosted version at least has voice chat unlike Stoat.

Mumble is great for VC tbh, doesn't really do anything else well though but I use it for VC

I will definitely check out jitsi. Thanks man!

This seems very promising. It's a self hosted discord. Basically exactly what I was searching for. It looks like it's a bit buggy for now but I will test it when I get home.

That looks interesting, and since it's licensed under GPL I do genuinely hope it's successful,

It'll have to prove that it can eventually scale at least as well as the battle proven XMPP protocol (apparently the main Fluxer server is already experiencing lag from the sudden growth its gotten after the discord announcement). And it'll be competing with the Movim XMPP client (which may reach feature parity with Fluxer soon). But I do wish the dev luck. They seem pretty chill, and with more contributors, I could see it taking on Discord.