At the end of the day, whether you have a pathological dissociation of identity that meets the criteria for DID or not, your experiences are still going to be your experiences.
I was diagnosed with DDNOS and for years believed that I had a sub-clinical presentation of DID, but I have also known that my symptoms don't meet the criteria for any full dissociative disorder other than literal "DD - NOS." AKA, my therapists knew there was something odd, but not what it was.
Very recently, as in this year, we figured out what was actually the issue, and it turned out not to be anything related to DID/OSDD/DDNOS. There are a myriad other things that can cause one to compartmentalize facets of their identity, including things that are literally not disorders. You also mention DP/DR as the reason why you think you have DID, but DP/DR is its own whole separate thing. Having one doesn't mean you have the other, it doesn't work like that.
I have a personality disorder, which is much more common than having DID, even though the one I have is quite rare (actually rarer than the prevalence of DID, if you can believe it - more likely to be the case, but still a lower incidence, snerk).
But my point is that just because my diagnosis changed and my understanding of my subjective experiences became more accurate, my experiences themselves haven't changed. I still have constructs that I've had since age 4. I still rely on those constructs to function. I still give them names and know what they look like.
It doesn't actually matter if it's DID or not. The obsessive focus on whether it is, is not assisting you. What would actually change about your day-to-day life if you were diagnosed with DID? Most likely not much. What is it that you want to change? If you want treatment that is targeted toward DID, you can do that without having a diagnosis or even the disorder. It arguably won't be as helpful as OCD treatment, but it's not like it's illegal for you to try.
Ultimately you need to figure out what it is you actually want from your life and your mental health treatment and pursue it. No one here is capable of diagnosing or treating you. You're the one who has control over the choices you make and the goals you wish to pursue. So go for what will bring you peace.