I can BARELY visualize, blobby and vague and no color, mostly just shapes that I have to focus really hard to form and they don’t stay together. Imagine bad drawings on an etch-a-sketch that someone keeps shaking.
I read fantasy and romance mostly, some Sci fi. That’s what I write as well. I don’t think it affects anything honestly. I write very descriptively and I love descriptive writing that really builds the world. Even though I can’t visualize things easily, I can know that I’m thinking about the things. I can build things up in my mind as words and ideas alongside my best attempts at visualization. One area that I could maybe see being affected is that I don’t imagine what characters look like very often unless I’ve seen fanart or in the case of writing if I’ve made images or models of the characters. I have an easier time visualizing images I’ve seen so I sometimes look up fanart or make images of characters so I can better know what they look like.
John Gwynne in the bloodsworn saga with “thought-cage” ugggggghh