I feel a narrative that goes along with my thinking but does not seem to me to be the thinking itself. I do a lot of my work visually, when I am on a roll I will generate 100s of matlab plots a day as part of my sorting through stuff. Certainly as I look at the plots I narrate what I think I'm seeing, but it seems that what I think I'm seeing comes before my pushing that into narration comes. So I think I actually do some of my thinking visually, but it is hard to put how that feels in to words. Maybe as a movie script?

It makes sense that your thinking could be both wordy and picturey, and even audio (non-words). And even body feel. From my reading (suggest Jeff Hawkins book on the brain) thinking activity shows up as activity in verbal and visual areas of the brain.