I bought a Panasonic Lumix S5 (amazing camera btw - the whole full frame lumix collection blows away everything else I have used and I came from a Sony A7iii) and there is a beta software from panasonic that installs drivers to make it act as a webcam. Actually works quite well and smoothly (it just recognizes like any other webcam - no software to tweak). Unfortunately it is only limited to 720P while the camera can shoot 6K raw video (SSD external required of course) but it works well for Zoom and whatnot.