The Only True Life State we have are
Aliens, Vampires, Spellcasters, Mermaids and Servo. One of which are fully fleshed out (Vampires) while the other one feels like should have been an Expansion Pack because there are so many things that the devs would like and can do in the lifestate but they can't because it is a gamepack (Realm of Magic) {I still wish Island Living was a gamepack and RoM as Expansion Pack :(( } Meanwhile The other Two (Aliens, mermaids and Servo) are nothing but a side feature of an Expansion Pack that did not receive enough Depth.
We also have the "Abandoned Occults". These are for me Life State that should have been an occult but the devs do not classify them as one. We have Ghost which are just sims with different colors with one or two abilities, Plantsims which are sims that have a different skin color and has one or two abilities with little minor changes and Skeletons, which are sims that have a different body looks and has only one or two abilities with little minor changes. I am sensing a pattern here....
So definelty the Occult Gameplay is severly lacking in The Sims 4.
