Vtube in VRC without a plugin (Camera + Personal Mirror)
This way is kind of jank and it means having camera and mirror follow you around but its another way to do it if you dont want to fool around with the OBS-only plugin to show the Steam VR window (or if youre like me and use Xsplit)
Only downside if having your view locked to the stream camera and not the first person view when moving around your headset. I streamed using this recently but I would occasionally unlock my camera and adjust it