I have gotten all the X2go supported WIndows Managers working on Ubuntu and MxLinux, therefore I am convinced I should also be able to do so on Zorin.
In pursuit of that goal I am presently deleting most graphical applications, particularly those gnome related, which will also affect Mate, so I can start with a clean slate as it were, a step that was necessary to get everything working on Ubuntu.
As a consequence, for the next day or two most windowing environments and applications will be missing from Zorin until I complete this work. Systems most like Zorin to use in the meantime or MxLinux and Ubuntu, both of which have all the currently supported X2Go Desktops working.