Is this on a fresh install, or have you installed a Wayland DE on an existing distro? If so, you may be missing some packages. What DE are you using for both X and Wayland?

I’m surprised wlr-randr is missing a display that xrandr can see, they should be looking at the same place for the display info. If you hunt through dmesg do you see any errors related to “EDID”?