9 layers but for MC, his kids and wife-Supreme layer in every Big Realms]
Mortal Realms-
[9 layers]
Elemental Realm
Body-Qi Refining Realm
Spirit Origin Realm
Foundation Establishment Realm
Golden Core Realm
Nascent Soul Realm
Soul-Body Integration Realm[early-middle-peak-completion]
Ascension/Nihility Realm
Crossing Tribulation
Saint Realms-
[9 Layers]
Saint King
Saint sovereign
Saint Ancestor
Saint Venerable
Saint Emperor
Saint Lord
Great Saint Realm/Good Fortune Realm
Sage Realm/Half Immortal Realm
Loose Immortal Realm/Mortal Immortal Realm/Earth Immortal Realm
And
more...