Using fabric stoneholm-1.4.1.jar along with terralith, more villager professions and many other mods.
A village is generated with only vertical means of transport and no rooms or villagers inside.
All other underground villages work fine in this save.

This specific village looks like this:
Surface entrance
Water elevator
Ladders (leading to one small empty hall)
Stairs (leading to one small empty hall)

Video here. https://youtu.be/z4Qyz5izD5M