Even though documentation claims there is a 2022 version that you should select if you want to use 2022 it is not showing up as an option for me. I have downloaded the iso
from 2 seperate places,
https://massgrave.dev/windows_server_links
https://www.microsoft.com/en-us/evalcenter/download-windows-server-2022
to replicate: fill in whatever you want in general
then head over to os
and change the version from linux to microsoft windows
you will not have a 2022 version of windows
https://pve.proxmox.com/wiki/Windows_2022_guest_best_practices one of the pages Im reading, though this is mentioned in more places than here