Feel free to add, correct, edit and update - it’s a wiki.
some positive reports / partially supported
The official system requirements for version 3.2.1 only mention MacOS versions up to Monterey.
“MacOS versions 10.10 and up” are compatible
Officially compatible with macOS Mavericks (10.9) and newer.
“initial compatibility” for Airfoil, Audio Hijack, Farrago, Fission, Loopback, Piezo, and SoundSource.
… add USB mics or interfaces…