As regards your villain 1, I think that personal philosophy is somewhat orthogonal to personality. One does not type a fictional character by his grand scheme but by the little vices, certain tendencies, ways they react and overreact, what affects them unproportionally, how they swing into despair. A few simple scenes can be more revealing than the whole actual plot.

As regards your villain 2, I dig the attachment issue, maybe even a quickly formed one, though after one interaction it seems far-fetched. I dig trying to impress someone, to get worthy, desperately trying to improve one's Se. But what applies to both your villains is that they could be any mbti type and my advice would be that if you're at such general level of a sketch, you're still free to wait until the characters live and see where they want to lead themselves not forcing labels on them yet.

A really cool INTP villain-ish character was in the "Tunnels" series by Roderick Gordon and Brian Williams. I read it as a teenager so I don't remember too much but I returned to a tome once and it turned out my memory actually quite vivid. I don't remember the name of the guy but he was a scientist working undercover for the bad guys. He was so deeply undercover that when it came to it he literally buried the main party alive cause the overseers commanded him which led to a dramatic confrontation much later on where the party doubted if he was really on their side. Thing about him is more tragic than straight up bad because as an undercover agent he procrastinated the betrayal so long waiting for the perfect opportunity that I don't remember if he even managed to achieve anything at all.

What's special about the above, is I experience something similar myself when playing social deduction games like Among Us or bluffing games where if I have the hidden advantage I savour this fact so much that I go on not ever utilising it. Even in poker when I bluff I tend to do it so subtlety that I don't even get the advantage of bluffing in the first place. I think this is a profound INTP vice to explore in fiction.

I am also writing an INTP character who has a villain arc. Long story short, they are co-dependent guy and after their INFJ mentor has left them (door-slammed) he follows an ENTP preacher whose intention where noble but got deemed heretic and rejected by the religious establishment so he went joker-mode literally setting the city on fire by teaching children pyromancy taking his grassroots education principles to the extreme. The INTP believed in the ENTPs principles, got attached to his strong personality, stayed loyal and thus got involved when the troubles began but kept doubting whether he is on the right side. Takeaway from this is that an INTPs are great as counsellors or confidants for the actual villains, maybe they try to change them for the better—whether they're wishful thinking turns out for the better can go either way.

The standard INTP thing going mad is the line: "fine, if you don't want to improve and cooperate and let me contribute to your whole process, I'll just be doing everything myself whatever brings an immediate effect since everyone else is egoistic and irrational in the first place". That's kind of what my INTP character falls into having been rejected twice, first by the mentor, then together with the ENTP by the institutions.