Sister Realms
Now that we know all the realms could someone ask Doc Wyatt if the have plans to elaborate on sister realms and if some of these could be true
First Realm (Mother Realm)
Djinjago (Hope) - Cursed (Despair)
Mysterium (Magic) - Imperium (Techology)
Underworld (Hell) - Cloud Kingdom (Heaven)
Departed (Peace) - Madness (Chaos)
Lee (Humanity) - Realm of Monsters (Monstrosity)
Eternal Dawn (Light) - Umbrasilvis (Darkness)
Whispering Woods (Flora) - Wyldness (Fauna)
Ninjago (Close) - Never Realm (Distent)
Ninjago and Never realm is a stretch but Ninjago is the closest realm we have being the main one it could also be based on balance and never realm is stated to be the most distent realm from ninjago (maybe sister realms are realms that are most distent to each other)
Created by FSM:
Imperium (Energy/L_ightning)
Never Realm (Focus/I_ce)
Eternal Dawn or Wyldness (Motion/F_ire)
Whispering Wood (Strength/E_arth)
Ninjago (Balance/LIFE)