so I started up the mod to check and here are the elf% of each Elfrealm in vic3
Redglades 100% elf
Aelnar 100% elf
Moonhaven 100% elf
Elathael 75,6% efl
Cyranvar 67,6% elf
Ibevar 38,8% elf
Rezankand 18,8% elf
Azkare (if you count it as an elfrealm) 1,49% elf