This is some solid info!!!
I would also recommend you check out this piece of free software!
https://www.vb-audio.com/Voicemeeter/index.htm

A student of mine shared this with me some time ago, and it has helped immensely for doing skype vocal lessons!!

This turns your computer's different audio feeds into "virtual cables" as it were, so you can mix and match different stuff right on it, like a skype call and music and a daw, all at once into one stream of audio, and it also creates a "driver" option on most programs, that way you could choose the output of it on discord and you could play music and use your setup at the same time, I wanted to share this with you on the las Chaos show broadcast but I remembered just now! :)

I hope this info can be useful to you, in case you didn't know about it before hehe