Also in Elpis there was a point you could speak to Emet and he would elaborate on the actual organization of the Convocation and specifically, what each seat dealt with in day to day affairs (much of it, rather mundane government work) - some of it was rather surprising, for instance Altima being responsible for, among other things, the arts especially was an eyebrow raiser for me. So studying that might help fill in a lot of the blanks about the Ascians and their titles, and who they might have been back in the Unsundered World.

Elpis also confirmed Elidibus's statement back when he first appeared in ARR about his white robe identifying him as an 'emmisary', and getting rather insulted no one knew what the hell he was talking about (given it was common knowledge in ancient times). Seats on the Convocation that were emmisary/liason roles (as in, dealt with the wider world at large or the common people directly) wore white robes identifying them as such, and the seat of Elidibus was one of them, (something he carried with him post Sundering and his status as Zodairk's heart).

Interestingly, it seams the seat of Azem was also one that wore a white robe given Emet's above explanation about the Convocation stated Azem's role also involved interacting directly with 'the masses', allthough it was not confimed, it does probably however explain Venat's more slightly greyish robe, as a former Azem who refused to 'return to the Star' upon her resignation she probably had to change her robe's colour to reflect her new social status as no longer part of the Convocation, but still serving a "help anyone"/defender of the world role (sound familiar?).