I was with some friends that were in a band together, and we got thinking about this topic, and ended up arranging ourselves from least verbal to most verbal. I was on one end, where all of my thoughts appear as emotions or images; on the other end was our bassist, who experienced his thoughts as fully formed sentences. He said when he's getting to a difficult passage in a song the words "better focus here, don't mess up" will ring out in his head. He also said he has fully dictated mental conversations with himself.
I also read very quickly because I look at the shape of paragraphs and assemble the word-shapes into mental images and pick up meaning that way; high speed, but low comprehension. I struggle greatly to read philosophy because it's quite difficult to visualize. My wife reads slowly but hears every word in her head; her comprehension is much higher. I can do high comprehension reading by slowing down and looking at every word, but it feels like holding back an excitable dog.