@pathfinder To put what what you're saying in a couple of labeled boxes:
I think what you're saying is that your brain has a strong recognition or association memory, which are categories of implicit memory, but your brain is not strong on episodic memory, which is a category of explicit memory. You also seem to have a brain that associates stronger on auditory stimuli than on other senses.
I'm not read up on whether there's an association between this combination of memory function with autism, or if it's just that one axis of being you is your autism (which you seem to be implying, apologies if I read it wrong) and another axis is how your memory works.