There are a few other mental disorders in the Diagnostic manuals that address cults. Dissociative Identity Disorder is not one of them.

if you read diagnostic manuals, you will see that in order to be diagnosed with Dissociative Identity Disorder the symptoms, problems and behaviors cannot be because of -

1. Drugs, alcohol,
2. other physical and mental health conditions, disorders,
3. imaginary friends (some USA states call imaginary friends fictives, factives, cosplay, role playing, fan fiction)
4. cultural and religious practices.

As for the "what if" in your post title -

when I am working on my dissociative issues or think about my dissociative issues I don't think in terms of "what if" my disorders were not what they really are. or "what if" my disorder criteria included things it does not include.

my reality testing remains intact with my dissociative issues.

That means when I am dealing with my dissociative issues or thinking about my dissociative issues, I deal with how they are right now in the moment, not "what if" this or "what if" that.

I have been dissociative my whole lifetime due to trauma in very early childhood. so, I already know what my triggers are and what dissociation feels like, there's no need for me to "what if".

for me and my reality remains intact thinking about my disorders is -

ok Im feeling this. This is whats happening physically in my brain. I am reacting to this trigger, Now what do I need to do in order to get grounded, present, more focused and aware so that I am no longer dissociating.

then I follow through with doing my grounding, therapy work that brings me into being grounded and present instead of dissociating.

"What if's" don't figure into my thinking process around my mental disorders nor my therapy program that my therapist and I am doing (IFS which is similar if not the same as AIR Network Therapy)

my suggestion - if I remember right from your other posts, you are in a reality-based therapy also that is similar to IFS.

talk with your treatment providers. explain to them you are interested in a disorder you stated in your post that you do not have,

then they can provide you with what you need so that you can learn about the differences between the disorders you are interested in vs what you are diagnosed with.

They can explain to you why some disorders in diagnostic manuals do not include cult issues in the disorders criteria.