This is a very refreshing post and relatable! I share your motion to sound or sound to visual form of synesthesia... I can essentially visualize how sounds or created, or their origin, almost in an echo location type way.

The most prominent form of synesthesia I experience is grapheme to color.( I see all letters and numbers in color). I knew I had this form of synesthesia since I was 18 and learned what synesthesia was.

It took me another 5 years to realize I had more than just grapheme to color. It's incredible to realize what is going on in your head, but not being able to have a different mental reference to realize that isn't "normal"... Which then begs the question, what is normal perception, and how many of us are experiencing abnormal projections while being completely unaware they are happening?

This is a rabbit hole I am looking to spirial down with like minded individuals!