Age of Apocalypse question

I'm new to collecting.

I was looking at the upcoming reissue of the AoA omnibus and noticed it doesn't list X-Universe or X-Men Chronicles. Can anyone confirm that those are definitely NOT part of the omnibus?

Why wouldn't they be, considering they were part of the original AoA rollout in the 90s?

Are they included in any prior (or other) omnis?

With them not including it sort of makes it feel incomplete.