I was dabbling with a wizard club for my D&D game and the membership levels, and realized something interesting to me: "Initiate" and "Associate" (the nouns, not the transitive verbs) have the same suffix form and both define a person's place in an organization. My human brain saw a possible pattern, and I'd love at least one more (but hopefully at least two more) levels for progressively higher status levels in an organization. But Google failed me and I don't know the deep secrets of obscure English grammar, so I couldn't identify what type of words these were so that I could find more.
To be clear, I'm not looking for random membership level titles like Big Wizard and Biggest Wizard, or college terms like Bachelor and Master. I can do that perfectly well myself. I just hope someone can figure out what Initiate and Associate have in common and can continue the progression with words that already exist.
Failing that, the etymology appears to be Latin associare with a -t ending for "to join". Latin buffs please don't destroy me for explaining that in a dumb way, for I am dumb and my ways follow my being. Initiate doesn't seem like it has that root, like maybe people started using Initiate as a noun because Associate as a noun was a thing.
With that in mind, I could create new terms from Latin with the -t ending form. But that usually ends up sounding really alien ... until an internet startup does it and becomes famous enough that everyone recognizes it.
So if you don't know the next level terms in English, maybe some suggestions for the prefix from Latin?