The Whills in the Trilogy are immortal beings as George once said who feed off the Force so I wanted to give them some sort of personalities like the Priestess from The Clone Wars so here are their names and positions:
Esta Mus - the Wisest and most educated of the Whills
Dominium - the Timekeeper of the galaxy and master of strength
Fortis - the emotional one and overseer of the wars and conflict in the galaxy
Uber - the leader and writer of the Journal of the Whills who created the galaxy and watches over it
Right now, I only made four of them because I could be wrong but there’s an unknown amount of how many Whills are in Canon.
Also in the Trilogy as we progress to Episode VIII, the Whills are believed to give the enemies a false belief of giving them control over the Force and the Galaxy if they find the Realm of the Whills.
The Realm of the Whills looks like something you’d see from Avatar mixed with the World Between Worlds in Rebels…
The three Whills are also seen without Uber because he’s been isolated and hiding himself away with the Journal of the Whills for some time and they can’t reach him. But we’ll get to why that is later.