Read something last night that they are finding a close correlation in brain function in highly creative people and mental illness. Not sure this is any great stretch because I've written before I never envy the creative geniuses because they are usually one trick ponies and often don't function well in many other areas and situations. Actually kind of close to the savant phenomena.
I think you're dead on here. This has been my own personal observational experience over decades, and the same anecdotal experience of so many others I have known.
One example, the very best software engineers I have ever known have been almost exclusively members of this club. Focused like a laser to the exclusion of all else in life, but able to see the connections and abstractions that the rest of us routinely miss. And to do it with ease, at times almost as an afterthought, and often honestly and truly surprised when others don't see the same things.
I've always been fascinated by high intelligence in others. These are very, very interesting people with which to interact. They are not like the rest of us, for sure.
Ken