Greater Daemons of the Grumpy Philosopher
On the mortal plane, there is no such thing as a single Academic, as without peers there is no one to tell them how inspirationally brilliant they are. As below, so above, and so the Philosopher has begrudgingly co-opted the greater daemons of the former ruinous powers to his service, forming a body which is referred to as The Faculty, and has taken upon itself the additional title of Dean, assuming dominion over all denizens of the warp in doing so. The greater daemons now war almost exclusively amongst themselves, battling for greater privilege and position, including the greatest title a Daemon can now receive, that of 'Tenured'. They have taken to referring to their lesser daemons as 'Students', a form of address that no one has yet made sense of, as no actual learning ever seems to take place.
Former Keepers of Secrets
They spend a lot of time in their old realm, Slaanesh's Palace of Excess, now referred to as 'The Faculty Lounge'. Here they can be found sleeping in deep armchairs, eating big dinners, and bickering. A great deal can be noted about their status at any given time from which armchair they are sitting in, and who gets first go at the cheese trolley. Almost all of their lectures are scheduled to occur simultaneously in 'Room 3b', a purely hypothetical part of the warp which so far has not been found by any being, but that's causality for you. Used to try to flirt with the Students, but after the first 'departmental committee' was convened this quickly died out, as the punishment for being caught doing this was being made to sit on said committee in perpetuity.
Former Great Unclean Ones
As a group they have taken to wearing tweed jackets in quite unsuitable colours, yet the look strangely suits them. Generally love being fawned over by their Students, and go out of their way to give them every chance to praise them without ever actually doing anything as plebeian as educating, so they actually offer office hours in Nurgle's gardens, where any student can be assured of a cup of tainted tea and a slice of anthrax laden cake in congenial company as long as they don't actually expect to make academic progress.
Former Lords of Change
Spend most of their time deep inside the Crystal Labyrinth, as they consider it the best place to not be found by any Students, something that they seem to dread, and claim to be far too busy performing research to meet them. So far not one of them has published a single thing, but Kairos Fateweaver in his role as 'Senior Wrangler' has posited that as the future is theoretically the same thing as the present and the past, they have in fact all been hugely prodigious. It is yet to be seen if anyone will actually swallow this.
Former Bloodthirsters
Like their former underlings the Bloodletters they don't really fit in with this new order, and so spend most of their time on 'research trips' to the mortal realm, allegedly studying the nature of mortal violence and it's associations with free will and frustrated desire. This mostly involves hanging around the edges of battlefields in massive deckchairs, drinking heavily, and placing bets on the outcome, while looking rather wistful whenever someone performs a particularly gruesome kill.