Ubuntu GNOME has been an official distro for a few iterations already. Will be dropped in the future.

https://ubuntugnome.org

Ubuntu GNOME is the official spin that ships with a GNOME desktop.

you can always run the Ubuntu Gnome flavor, I think that's what the parent is saying

I've been using it for at least 2 or 3 years now :-)

There's small subdistro called Ubuntu Gnome