I don't know if this question has been brought up before. I find that I almost never think in words or sentences, unless I'm thinking about writing something.
When I'm just thinking I tend to think conceptually or visually. Words might float up, but never in a sentence structure.
I'm an INTP. My sister who is an ISFJ says she also doesn't think in words very much.
But in one of my classes, there was a debate in which most people seemed to think that thinking without words is impossible.