Earlier quoted context omitted.
As somebody who only has closed eye visuals in deep meditation or in dreams, I would maybe describe what you call "knowingness" as "abstract representation"? As a kid I've always been really good at these "imagine how this shape folds in 3d" kind of tasks, and I would generally say I am above average at imagining how things relate to each other in 3d. I just can't turn it into an image in my mind's eye
I have aphantasia as well, but have had visuals once during meditation, much clearer than in dreams. I've never managed to repeat it. Does it happen regularly for you? Any tips? Like you my spatial reasoning is very good, but no image.
My takeaway from all of the discussions is that the ability to 'see' an imagined visual representation of something exists on a spectrum from absolutely nothing ever, into a minds eye abstract idea of an image (like a melody heard in your mind rather than your ears) toward a full ability to see an image overlay in the visual space. There's a lot of debate as to whether this is a trainable ability.