It took five months, but I finally have my diagnoses.
"Autism Spectrum Disorder, requiring support, without intellectual or language impairment."
As apparently typical, it isn't alone; major depressive disorder with anxious distress, panic disorder, and agoraphobia.
Some of that didn't really surprise me, to be honest. However, I am still feeling... odd... since receiving the diagnoses and the full report.
Only took the better part of five decades to find this stuff out. Now I have to see what I can do with it.