I do not agree with your view of those who use pictures in thinking. To me that is a far more advanced form of thought. This is why the vast majority of geniuses throughout history have been identified as autistic., including Newton. They have an enormous mental advantage over the neuro typical population.
Franklin, I agree that for most people, thinking occurs in word. However for many autistic individuals ,including those who have verbal language, their thoughts are in the form of pictures. The well known professor Temple Grandin, who is autistic and verbal, has given talks on how all her thinking is in pictures. She has stated that she doesn’t think in words. In my work with autistic youth I have asked them how they think. I always receive the answer that they think in pictures.