I'm not sure if I understand correctly about "thinking in concrete English sentences or words" as other comments have mentioned, so here's a description of what happens to me:
I can visualize things in my mind, and it's almost as if I was playing a video or rotating 3D models in Blender, but they happen as if they were at a 70-80% brightness level. I can verbalize my thoughts or words I am reading from some text as if someone were speaking into my head, but that's not how I "comprehend" them, especially if they have more than a negligible amount of complexity. They have to be converted into a set of visualizations, however vague or abstract, somewhat resembling what GenAI does. This has a noticeable delay and I almost always lose track of, say, what a lecturer is saying in real time. Because of this, I almost always prefer having text or a prerecorded video being available.
I can "render" text in my head too, as if they were being written down in a word processor or like a screenshot of a blogpost, but it's still an image.
I find difficulty trying to manipulate any symbols in my head. Mental math or algebra with more than a miniscule amount of rigor is hard for me to do and I always require pen and paper as a support. Trying to do this requires me to "graphically" move symbols around a written equation, and because of my usual scatterbrained-ness, the context quickly breaks down and evaporates. I have to maintain that context with paper. I find it easier, however, to visualize an algorithm or similar things in my head as a video-animation "playback".
Here's an example: https://commons.wikimedia.org/wiki/File:Tree_rotation_animat... - This is exactly what occurs in my brain when I think of tree rotations (extended to larger tree heights), and was the only, singular useful thing for me in the entire wikipedia article on tree rotations.
As an aside, the imagery that video GenAI generates, with spontaneous, random pop-ins of objects is eerily similar to what happens in my dreams and in my mental imagery. Second, I'm not particularly fond of reading books, literature or poetry, but I do find myself semi-regularly reading long blogposts or texts if they interest me, and watching long-form videos or podcasts.
