I don't know which name is correct but the theme was named Vanilla-DMZ since forever; with this r1 bump, the theme got renamed to DMZ-White. The situation is the same for vanila-dmz-aa-xcursors, renamed from Vanilla-DMZ-AA to DMZ-Black. It took me a while to realize my cursors weren't what they were supposed to be, and what was causing the issue, forcing me to update my configs. I wonder if this was an intentional change or an oversight during the EAPI bump. A quick check reveals Arch still uses the Vanilla-DMZ* names while Fedora uses the DMZ-* ones.
Tbh, I am supprised, that someone still uses that old xcursors :-) Yes, this change was intentional, as upstream names this Theme "DMZ" in their index, so it fits more the upstream name.