I totally agree, I would have been diagnosed at least ten years earlier.
Full blood panel tests should have a c-peptide and fasting insulin tests.
Many T2s have what is known as hyperinsulinaemia, which because of insulin resistance causes a cycle of having hyperglycaemia as well because insulin resistance won't get rid of the glucose derived. There will be circulating insulin in your bloodstream that won't help and the amounts of carbs and sugar in the average diet, will exacerbate the cycle of more useless insulin and higher glucose levels, when it should have been back to normal levels.
An eOGTT is a diagnostic tool to eliminate other conditions depending on results.
I have had a few glucose tolerance tests, and because I went hypo, even though I'm not T1 or a T2 on meds, I needed further tests to diagnose my condition.
So a tolerance test will help but unless you have other tests, it might be a waste of time.
As someone has already said, your readings are fine, normal and as long as you maintain them in and around normal, you should be okay.
Keep testing and unless you see something that concerns you, behave yourself.
It's your health, look after it!
Keep safe