Since you use group policies and images (even if images are outdated nowadays) I assume you are trying to configure this for a company with an AD domain and M365 licenses. Since you couldn't use group policies with a domain and you can't use M365 features like OneDrive without licenses. I hope you are not allowing personal accounts..
Why wouldn't you use OneDrive in this case?
It's much better than the old way of home folders in a file share.
Anyway I'm half tempted to try and do it myself because I doubt it's impossible.