What an interesting question. I think some of the pairs you identify are, in practice, the same thing, but to me some are clearly different.
I'm in the UK, so I'm going to start with what will soon be our definitions, from ICD 11
Complex PTSD is defined as PTSD plus
"1) severe and pervasive problems in affect regulation; 2) persistent beliefs about oneself as diminished, defeated or worthless, accompanied by deep and pervasive feelings of shame, guilt or failure related to the traumatic event; and 3) persistent difficulties in sustaining relationships and in feeling close to others" and
Complex Dissociative Intrusion Disorder is
"two or more distinct, nonintegrated or incompletely integrated dissociative identities, each of which exhibits a distinct pattern of experiencing, interpreting, and relating to itself, others, and the world. One identity is dominant, but is persistently and recurrently intruded on by components (i.e., dissociative intrusions) of one or more other dissociative identities, although these do not take full control over the person’s consciousness and behaviour. These dissociative intrusions typically involve a combination of cognitive, affective, perceptual, sensory, motor, or behavioral features"
How are emotional parts different from emotional flashbacks? "Made" thoughts vs negative self talk or otherwise distorted thinking "Made" actions vs emotional dysregulation causing behavioural issues
To me an Emotional Part is the aspect of myself that holds the memories of the past,and is kept as much as possible at bay by the Apparently Normal Part, which is afraid of the things the EP holds, to the extent of being phobic of it, As
@Ragdoll Circus says, that much is part of the theory of Structural Dissociation. It seems that when triggered the out of date experience of that EP pops through, in what ICD calls a dissociative intrusion. For me that can be an urgent desire to step in front of a van, a crippling conviction that I am worthless or equally can be the inability to see my current surroundings clearly or at all. I might just be aware of the loss of 3D vision, or I might see the wall or curtains of the past experience of the EP. I think all of these things are intrusions, or what can be defined as made thoughts or actions.
To me, there seems also to be a more constant negativity of thought and feeling, that is with me almost all the time, and that I think is what you are calling negative self talk and disregulation. Those seem to be part of the persistent beliefs, feelings and difficulties identified by ICD as part of complex PTSD. For me, it is easier to see how to tackle those persistent problems, because they are susceptible to logic, sustained care and restructuring of my mind. The intrusive bits are beyond me at the moment, but I hope I'll find a way through them too.
I do like a good definition, but pinning it down has only two uses - helping me understand more and fear less what is going on in my mind, and working out the way to deal with it all.
