SuperDisplay had always been great. I already replaced my Chinese drawing screen with my Tab S7 FE over SuperDisplay. Over USB 3.0 and it’s very reliable, no lag, pen work great without any driver issue I encountered from Chinese tablets. The resolution is also very high with touch support, I would have to pay almost a grand for a drawing screen with the same features.
As for your question due to Apple reason, Mac doesn’t seem to allow extend mode on anything other than ipad Sidecar. Astropad seem to have managed to work around that but it requires additional dongle hardware and subscription and probably only support iPad. If it’s just mirror then Easy Canvas seem to be a great candidate.
I made a list here on which software support what. If anyone have any input, fell free to add to it.
https://forum.tabletpc.review/t/list-of-software-that-turn-tablet-into-drawing-screen/