a) How are you around people are very similar to you? Do you feel more or less comfortable? Or do you find that it creates conflict?
I haven't met many people that similar to me, but I have found that the very few people who are, end up being my closest friends. My two best guy friends are an Infj and Enfj and my best gal friend is an Infp. I think that is because i feel i can let my guard down around them, I am more comfortable with people who are very similar to me. With my infj and infp friend, it can sometimes feel like telepathy is going on in our moments of silence, and that can get weird sometimes, when i am trying to hide something
b) How are you around people who are very different from you? Do you feel comfortable - very interested, neutral, or annoyed?
I would say a combination of all 4. It all depends on their behavior towards me to be honest. I can't stand it when people try to force me to talk in front of a large group of people, or interrupt my thinking/reading time with mindless chatter, but occasionally, I have those days when I need mindless distractions from life, so I will usually hang out with my friend who is an istp, because she's a ton of fun to hang with, and i don't have to worry about her being TOO perceptive and trying to figure out what's wrong with me, when I am trying to ignore the fact that there is.