my suggestion is not to worry about trying to compare or understand how others are similar vs different... each persons internal system is comprised differently.

short version... here in the USA we have uniform ....diagnostics....that every system must meet before a treatment provider can label them with any mental disorder including dissociative ones.

but because how each persons.....symptoms and triggers (which is different than diagnostics)....affect their self, their life and those around them two people can have the same mental disorder but still be different in which symptoms they have and how these symptoms affect their self, their life and those around them...

example a friend and I both had DID..... she heard voices, I rarely heard voices, I felt a sense of sinking, she felt a sense of floating, I dissociated into an alter during storms, she did not, she dissociated into an alter when she heard the word bread, I did not. I dissociated into an alter during intimacy she did not, She dissociated around great bodies of water I love the water.

another example both a friend and I have depression... though we both met the ....diagnostics.... for it, our symptoms and triggers are different. she gets an overwhelming sadness during the summers, I have overwhelming sadness in winter, she has trouble getting out of bed, I have no trouble getting out of bed when depressed, ....

see what I mean trying to figure out how people are different and the same with mental disorders ends up being a losing battle that only ends up causing more confusion and problems.

the best thing to do is not to try and figure out someone else's mental disorders and how they are the same or different from you but rather continue working with your own treatment providers in figuring out how your own mental disorder is the same and different for you in ways that affect your life, and those in contact with you.

example I noticed that when I was with one person I tended to be more dissociative than with another person. I noticed when things were calm I dissociated less than when my schedule was hectic, I noticed differences and similarities in each of my alters and symptoms... doing this helped me to understand me, my mental disorder and how to gain stability while living with a mental disorder.