I suspect I have a small working memory as I very rapidly get lost in chess trying to remember possible moves though this is not pictorial memory. On IQ tests I'm around 135-140 so that can't require large working memory or pictorial memory. I'm a here and now person as the past means very little to me as I can't imagine any of it. I seem to have had enhanced abilities to sort out some technical problems which might be related to aphantasia. Possibly this is like the mind compensating for blindness with enhanced hearing. Anyway I was often called in to sort out knotty problems on systems as to my mind these were easy whereas other engineers couldn't see the wood for the trees. As I have no visual memory I'm not sure how my mind was working to do this but answers appeared. I also came up with unusual solutions for designs - again probably my mind was treading a different path from most people.
My aphantasia covers all senses which is why I long suspected I had a more restricted internal life than many others, as I could not relate to their experiences. For decades I assumed the mind's eye was fictional and not a real attribute. I guess my restricted viewpoint made the obvious choice for me was to study science and maths and avoid all literary subjects. I suspect many with aphantasia will be engineers like me.