One of Wittgenstein's logic movements in the Tractatus is from picture to thought. As someone who almost never uses visualization unconsciously (but almost always with an intent to visualize) I had to ask a friend who is more visually-inclined whether her thoughts are visual. She confirmed that her thoughts are visual and that she could not imagine how it is to think without the visual component. For me, the majority of my thoughts are either language or mood based.
It also recalls an interesting conversation I had with a couple of friends at a bar where among the three of us I was the only one who did not visualize scenes while reading. Even when I am reading a description of a setting, I do not visualize but aim to understand the function of the setting within the scene. In the same way, if someone talks about a red dress, I won't even visualize the color red. I cognitively understand what is being said but there is no visual component unless I consciously decide to think about the dress as red visually.
It would be interesting to find out if there are different brain pathways in the way people think based on what their thought associations are, whether it's visual, aural, language, smell, taste, etc. For me, my thoughts are mostly a combination of language, mood and the not yet articulated. As such, the most frustrating part of this is the limits of language and seeking out the exact words that express what I am thinking. I wonder if this is part of the reason why words and books have such primary importance in my life as it is the vehicle of thought and communication. I wonder whether for those who have a sensory component to their thoughts if language is the dressing of thought rather than the thought itself.