Hi Bob,
I read your post with considerable interest because I too, last year, at a relatively advanced age, came to be diagnosed with "high-functioning Asperger's". I was 56 when diagnosed and I suspect you and I are of at least similar-ish age.
For me, it was a relief and a release. The diagnosis came after I watched an episode of "Australian Story" that involved former Deputy Prime Minister, Tim Fisher. His sons are both fairly obviously autistic but it was their diagnosis that opened up Tim's diagnosis -- after he had left politics. I sat and watched Tim Fischer speaking about it and how it made him feel, think, act and react and I just sat slack-jawed thinking over and over again "me-too!"
I contacted by psychologist (who I have been seeing over other issues for a number of years). He pointed me in the direction of a couple of on-line tests (I did both) which showed a quite strong positive. Following a 2 hour dedicated appointment, he diagnosed me -- and confided in me that he had suspected it for at least the previous four years but was reluctant to suggest it.
For as long as I can remember, I have felt a bit "different" and out of step in so many situations. Somewhat uncoordinated, awkward, rarely felt comfortable in social situations (not nervous but feeling this was all pointless or baffling), frequently preferred my own company etc etc. I do however have an exceptionally strong memory and an IQ in the high 130's. I also have Synesthesia -- which is a strong indicator of Asperger's (a lot of people with Asperger's also have Synesthesia. I wasn't aware it was an indicator until after my diagnosis, but I was aware of my synesthesia for over 15 years (my daughter has synesthesia as well). I have nearly none of the other more classical symptoms of strongly autistic people (rocking, hand movement, tantrums etc). As a kid I was very well behaved, loved systems and structure but was inclined to be very "day-dreamy" -- I spent much time looking out of the window in class lost in my own imaginings. At one point I was investigated for the purpose of detecting a learning difficulty). Also very poor with "the opposite-sex". Under-performer in primary School, high school was the complete opposite as was tertiary education where I was a high performer.
Some talk about it as being a "super-power" (Greta Thunberg claims it is her super-power) -- it isn't, but it does make you "different". "Wrong planet" -- or so they say. Not better, not "disabled" or worse, but we do look at and react to the world in a decidedly non-standard way and simply function differently.
I am no Sheldon Cooper clone, but let me tell you for many years prior to diagnosis, I would watch that show and often think to myself I "get that" -- meaning the way he feels, acts and reacts -- strongly empathetic, but didn't understand why. Now I know.
I wish you all the best with it.
https://en.wikipedia.org/wiki/Synesthesia
Best,
L.