Commenting on your initial post . . . being at a good weight and very insulin-sensitive is actually a perfectly valid T2 presentation, and not as unusual as your endo believes.
Type 2 is not a diagnosis in the true meaning of the word. It’s a diagnosis of exclusion. When it’s not possible to definitively nail down a specific type diagnosis using available tests, the result is that the patient is classified as Type 2. Type 2, therefore, is actually a catch-all category for diabetes that can’t be precisely classified any other way. Consequently the “Type 2” bucket includes a variety of different presentations. While obesity accompanied by insulin resistance is the most common, it’s certainly not the only one.
For the record, I am type 2 with normal body weight and BMI and no insulin resistance to speak of. (And before people jump in and say, “are you sure you’re really not Type 1?”, yes, I’m quite certain. I have had diabetes since some time in the early 90s, and until fairly recently it was controlled with diet and ever increasing doses of sulfonylureas. If I were truly T1, I’d be dead now.)
So don’t put complete faith in those stereotypes. In any case, the bottom line is that I don’t care whether I am type 1, type 2, or type 37. What matters at the end of the day is good control, whatever that requires. Eyes on the prize!