I'm gonna go through the aerial spirits! If something doesn't have a link yet, I'm working on it!
The Ars Theurgia is a list of spiritual entities. Some people consider them demons, some don't. They're described as having the capacity for good or evil and are invisible, so a lot of people consider them to basically be a type of djinn.
Everything listed here is my own subjective experience. Most big entities like major demons or gods are very multi-faceted and will show different sides to people (kind of like how we might have a work mode/home mode). This isn't even getting into the fact that big guys will often send other demons to act on their behalf or are just a bunch of guys in a trench coat. So like... The version of Asmodeus you summon might be a different version of Asmodeus than what someone else works with even though they're both genuinely "Asmodeus", and that's OK.
I actually recommend not getting too caught up in other people's UPG if you don't like it. The important thing is that whatever type of magic or rituals or whatever you do ends up enriching your life and making you happier. However, some people enjoy reading other people's experiences, or newbies might want a push in the right direction and want to hear info from first-hand accounts in order to make a more informed decision. So that's why I'm writing stuff here.
Due to the multi-faceted nature of entities (disregarding the presence of any imposter spirits), just because I have a good experience with one, doesn't mean you're going to also have a good experience with them. Exercise caution and just do whatever you vibe with. While I think things like spirit work are generally safe to do so long as you're not purposefully antagonizing things, I am not responsible if you get yourself into a pickle.
So there's pretty much no info on these guys out in the wild- I think people gravitate towards the real demons rather than the aerial spirits since those have more meat to their pre-established canons. As such, this will be highly experimental and I'll just be playing it by ear. I will not claim to be the end-all be-all source of these guys, since it's entirely possible I end up contacting a specific niche facet of them or get an impostor spirit.
If you understand that and are here for funsies or something, then feel free to proceed... Once I get some pages up. Pages will mostly correspond to the head honcho entity mentioned- named lesser dukes will be under the same page as their master.