I would like to take this up to make the Suggestion to clearly label the Wayland and Xorg Options on the Login to:
Zorin Desktop on Wayland
Zorin Desktop on Xorg
I'm not the first one who suggested that. It would take out some Irritations and Confusion what I've read here from Time to Time and in the linked thread, too. Especially when that turned when You install Zorin with Nvidia Drivers. So, I would find it good to clearly label both Options as what they are.
This has been an issue for years, I'm surprised how this very obvious issue, has not yet been addressed, after all this time. I agree with you @Ponce-De-Leon
From memory, the only saving grace of SDDM is that there was a box that showed you what display protocol was present at login. But really only for KDE Plasma.