I use the free IP Webcam Android app on my Galaxy Tab A also running Spacedesk and the OBS Multiview, using USB tethering to maximize performance.
I also have a few Logitech C922x Pro webcams and a Sony Alpha a6000 (connected via an HDMI to SDI converter into a Blackmagic DeckLink Duo 2).
The best Webcam is probably the one you have on hand. Beyond that, if you can afford to, skip the Webcam entirely and get a quality SLR-type camera with a good lens and large sensor into an HDMI capture device 