A lot of what they say about INTP's is along the lines of a "non-traditional logician type", which I'd say is true. An even truer fact that I see a lot though is that INTP's love being alone and are quite socially distant, which is beyond true to me. I kind've think of INTP's as astronauts, not in the real scientific sense, but in that we are so detached from everything but still try to make sense of the world around us. I guess it's more so like aliens in that way lol.
INFP's are the same in their "spacey" states of mind. Compassionate, in the moment, and quite odd in their way of taking situations on. More than anything (to me) both are super open-minded and nontraditional which I think is spot on.