Which Might and Magic universe are you referring to?

Question for those who understand something about the Asylum. Regarding the style.

Haven – European culture
Sylvan – Slavic culture
Sanctuary – Buddhist culture
Academy – Islamic culture
Fortress – Scandinavian culture
Stronghold – ? (Mongolian (5) or Aztec (6) culture)
Dungeon – ?
Necropolis – ? (Egyptian (6) culture)
Inferno – ?

Can anyone clearly correlate them? What culture does each faction ultimately adhere to?