Bruh, you sure did try something there, didn't you? That's not what those say, and I don't think you even had the time to read them.
Let's go again, and with more links
Sorry you want to gatekeep trauma, you do NOT, in fact, need to have *this much trauma* to ride the ride.
To anyone reading: Trauma is trauma, and it can affect you as deeply as it did, and you don't have to justify it. Promise, it's okay.
A Meta-analysis on Childhood Trauma Involved in Dissociative Identity Disorder Then a meta-analysis is made to illustrate the influence of different types of traumatization on DID patients, giving a result that the origin of DID more likely comes from emotional abuse and neglect, followed by sexual abuse, and is least likely to come from physical abuse and neglect.
Childhood emotional abuse and dissociation in patients with conversion symptoms a stepwise multiple regression analysis conducted on quantitative scores demonstrated that emotional abuse had a statistically significant effect on dissociation scores (the biggest effect, in fact).
Predicting a dissociative disorder from type of childhood maltreatment and abuser-abused relational tie (PDF, careful on phone)
Dissociation in victims of childhood abuse or neglect: a meta-analytic review
The origins of dissociative identity disorder from an object relations and attachment theory perspective
This is from The Trinity of Trauma
From Infant Attachment Disorganization to Adult Dissociation: Relational Adaptations or Traumatic Experiences?
Trauma, Dissociation, and Disorganized Attachment: Three Strands of a Single Braid (PDF)
Disorganized Attachment, Development of Dissociated Self States, and a Relational Approach to Treatment
Episode 087: Disorganized Attachment: Fear without Solution
I would suggest reading up on disorganized attachment and broken trust trauma to learn more about how emotional neglect (not even abuse, just neglect) can result in DID.
Like I said, this is new stuff coming out. Most papers are very new and I can only access them through the university.
My job isn't to give you these sources, it's your job to learn new keywords to see what new research is coming out.
From the ISSTD themselves.
What are you even on about with psychological abuse? You're really stuck on the emotional ABUSE part, not so much the neglect. It's the neglect part that really rounds everything out in research.