None of them. But GNU does not have this either. For awhile GNOME was part of the GNU project, but isn't now, and even when it was, X was not a GNU project.

GNU has this random assemblage of packages:

https://www.gnu.org/software/software.html

So add the Hurd to that, along with an actual distribution mechanism (not a trivial task), and what you get is something like a BSD.