There are some of the mod lists from modding-openmw.com available in the "meta-momw" category:
https://portmod.gitlab.io/openmw-mods/meta-momw/. Some them aren't up to date (most? all?) or are incomplete.
While the "Total Overhaul" list isn't included, as far as I'm aware it is (or was) equivalent to expanded-vanilla + graphics-overhaul. Note that graphics-overhaul is very incomplete (see
#132, though I think some of those mods have been added since), while expanded-vanilla is complete for the date in the version of the package, but still out of date.
The Contributing guide is a good place.
In terms of updating the lists themselves, have a look at
one of the packages for them: they are just a list of individual packages as runtime dependencies (
RDEPEND
), so once any mods which are missing have been added to the repository, they could be added to the list.
meta-momw/graphics-overhaul in particular is in a bit of a mess since it's both out of date and incomplete, so adding to it may not make sense without doing a thorough update to the new version (which should be done as a separate file; I'd been dating those since the lists don't have a version, ideally using the dates from the last update, which can be found
here).