I definitely have a type when it comes to more romantic interests, but it has a lot of room for variation within it. I like women with tomboyish tendencies and a life that formerly (if not currently) repressed their sense of power, leading to a more liberated exaggeration once they become/became free from others expectations. Ideally this sort of person would be sadistic since I have trouble enjoying sex without a partner of that mindset, but if not that at least one willing to try new things. She'd speak her mind, be able to keep up with me in conversations, and would have no qualms challenging me when I present opposition either seriously, sarcastically, or for the sake of discussion. The person'd need to have passion or zeal about something, if a something I enjoy as well it's a plus but not a requirement since it's an excuse for me to learn something new through them. Ideally I'd want the person to be a free spirit untethered by social dynamics while also knowledgeable about how they work, and for it to work my traits would need to comfortably be able to co-exist with theirs. Communication-wise the games would be lighthearted with a quick reply that discloses the humor behind it in case it's missed to prevent a miscommunication from festering into something disgusting, and beyond that it'd be open communication from neither fearing how the other will respond (if not recognizing the benefit of talking about it instead of hiding it). In the realm of debate she'd be the type to keep her cool during it, not become exhausted from it, or if exhaustion happens admitting it instead of the "smile and nod" routine or the premade tapeloop rhetorics.
With all of that pushed by a powerful drive? It makes me melt as I begin to focus on such a person more than myself. Ultimately I want someone I can explore life with, even if that someone only has a few things in common with me. If anything the differences can give more to talk about and banter over.
If you're meaning people in general, I'm a lot less picky. If they can stand to be around me I'll enjoy their presence on some level, but the above can also lead to close friendships as well (save for the sadism part... kinda). I enjoy honest displays, which tend to center around sarcastic banter, open mindedness, not being afraid to say how they feel, a strength of will that doesn't make them slowly become more like me overtime, and not trying to act around me since someone playing a bit part sets off some red flags. Even negative feelings towards me I'd rather discuss openly than allow to fester. Beyond that I am a fan of power.