Hi Mathew,
This was very interesting. My dad has aphantasia and I have synesthesia (colour, number, letter, taste and musical). It was a shock for both of us to realize how different our perceptions and memories are. I also have a photographic memory and after reading this realize probably hyperphantasia also.
It makes me wonder how genetics play into these perceptions.
I am able to recall my dreams in full detail (like a colour movie) when I wake up and also later on.
My dad draws, paints and is a designer. He also writes stories and poetry. His creative ability is not diminished by the aphantasia, but he tells me he sees things when he draws them or writes them out.
Thank you for sharing your story and for such an illuminating read.