The intelligence one interests me, as it's definitely a very attractive quality to me too. And when I review the five LTRs I have had, the one and only thing all five men had in common was that they were, in my opinion, above average intelligence.
However, only one was in a career that I would say was in that sense commensurate to his intellectual abilities. (I am honestly not trying to make a judgemental about the worth of different jobs here - so I really hope I don't offend anyone - I am just thinking in terms of careers that require a degree, really).
One was still at university when I met him, so I suppose he doesn't count.
Of the other three, two had left school early due to their home life at the time, the other one had got an excellent first degree and started a post grad course but dropped out due to mental health issues. He, and one of the other ones, did gain other qualifications and a career whkle they were with me (these were the two I married - in both cases having to financially support them through this put a lot of strain on the marriage).
The third one, my current FWB, is highly intelligent but grew up in grinding poverty, and never really knew his father. His mom worked very hard but he had to start working as soon as he could, and was involved in some criminal activity when younger too from what I can make out. (Led into selling drugs by poor role models who took advantage). I don't judge him for any of this. But I DO judge him for the fact that he is now in his late 40s and has taken no opportunities to gain any qualifications in all that time, despite me offering (at one point years ago) to support him through this. He is a highly intelligent bloke, but seems to have no real interest in doing any kind of job that will really improve his quality of life (he works the minimum he can to get by, from what I can tell - nothing criminal now, I would draw the line at that! But nothing that really challenges or fulfils him either).
Sorry, long story short - I don't think what work someone does is necessarily a reflection of their intelligence always, and I used to be very much of the view point that I would never judge anybody for what work they did. But having been the victim of a succession of feckless grifters, I would never again choose a relationship with a man who didn't do work he was proud of and that fulfilled him. And that paid the bills! I am no gold digger, but I am not willing to be the Bank of Lurchers again, either ....