I know it is a small sample, but I've just been fortunate enough to know well and frequently fraternize with several(4 in particular I'm thinking of) really bright people. They are hard for me to classify. As simply as I can state it, they are all very interesting. There are certainly variations among them as they are from the 4 corners of the continent. Yet there are some common features. All came from relatively poor to mid class families. All are well read, but with different interests. All consume drugs for entertainment, alcohol and/or other. A couple are serious devoted sports fans, while two have no interests there. All work in the semiconductor industry. All have a strange, twisted, and sharp sense of humor. You do not want to get into an insult joust with any of them. If I might attempt some generalizations in the current context, they would be socially liberal as in "free". That is, they don't give a damn what your skin color is, unless it makes you sexy exotic somehow. Nor do they care what kind of sex you like; rather they are more likely to want to join in if you show them something different. Finally, they don't care much what you think of their tastes either.
On other matters they are universally quite conservative, intolerant of sheer stupidity and ignorance in themselves and others. The most anger I have ever seen in any of them was in one when he, or the government did something stupid. They are all fiscally sound, think the government should be also, and freedom loving nearly anarchistic. All seem to have a certain recklessness, what one described as "a healthy disrespect for the law". One was the first to reveal to me the concept that "just because it's the law doesn't make it right". If my dad ever heard that, he'd go up in flames.
If you asked any of them "Are you a liberal?" They'd all say no. I'm sure of it. Same for the conservative question. They certainly don't fit any modern representation of "moderate" either as some of their ideas are, at least in these modern contexts, pretty harsh.
Skipping to the end of your post, if intelligence has any effect at all on the reproductive success rate in the modern world, it seems to be counter productive. So I certainly agree with you there.