WebCord is an “alternative client” for Discord, although it’s just running the Discord webpage in electron. Recently it updated its electron version so it supports sharing audio as well as video.
I tried it out today on mint (x11, pulseaudio) and it works flawlessly.
Yeah I’m curious too. Does this feature works on Wayland?
On wayland (KDE Plasma) it’s not as seamless. For me it creates two sinks, one of which is voice channel and other is the stream audio stream. It wires my mic to both automatically and i have to manually wire the app audio to stream audio sink. So it does work with extra steps. I use qpwgraph for wiring.