I'm also a "slow thinker" in this regard. It's not in my view anything other than your thoughtfulness being influenced by your personality. Folks like us are attempting to be thoughtful but without trying, and we have the capacity to hold back our impulses from the cerebral cortex. People who are "quick tongued", are not always coming up with the right answer, their personality is simply more dominant.

What's always struck me as odd, is that I'm vastly superior in creativity versus almost everyone I work with or meet. For me, it seems that no one has truly new ideas while they do come to mind for me, out of nowhere. I also get the sense when I'm out driving or walking around that I'm more "aware" of what's around me than others.

That's discounting that seeing people be dumb enough to walk and drive with their face in their phone though, guarantees if you're not one of them, that you have at least a 50 point IQ advantage. :) I can't even really explain the feeling of awareness, but I notice a lot more, a lot faster than most people that I know.