Who cares?

You need to ask yourself why you are so obsessed with a diagnosis. It is not going to change your therapy and many meds overlap for many conditions. For example, many unipolar depressed people take mood stabilizers.

A label is just a label for insurance reasons. Your constant obsession with "why you want to be some label" should perhaps be a focus of your therapy.

Therapy is about growing and working to change your perspective about yourself and others, so that your life can be more fulfilling. A label is not going to change that.

Also, you can read into any diagnosis and make it fit you. That's why there is are experts in this area. They may differ on diagnsosis, diagnsosis change over time, etc. It does not matter.

Saying "I am Bipolar" or "I am Borderline" is not a badge of courage. And in many instances, it can be stimatizing.