I went ahead and did a cap of each codec to give people a general idea of how these compare while still. In motion, the AV01 codec looks the best (to me) across multiple devices with varying refresh rates. I could have put these screens up on Cap-o-holics or any number or screencap comparison sites, but I didn't want to deal with extra compression since I already saved in .tiff and captured these at 1080p (as opposed to 2160p). The scene used for comparison is @ 3:56.000:

AV1 @ 12617k
AVC @ 27218k
VP9 @ 17007k