Doing some investigation myself and it seems Resolve uses the Harmon Combined target, which seems pretty much the same when I tracked down the OPRA sources on AutoEQ - with a search on Edition XS and ‘all’ instead of ‘uniques’.
These seem pretty similar (and include the Oratory1990 version) and using Roon’s OPRA link to create a preset out of each of them I can see exactly where the main difference is. Resolve seems to use a 3dB lift at 1440Hz that no one else touches and he doesn’t bring down the hump at 1980Hz ish like the OPRA versions all do… likely a result of their software as opposed to his one presumes?