Homebrew Setting Clans: Half-Elves

I remember many years ago sitting down with the 3.5 Players Handbook to study more of the world I was trying to exist in. My favorite thing to go back and forth about was not what class I was or what backstory my character had--I liked to think about the races. I remember one time, I was reading about half-elves, and there was some stray, fragmentary mention of half-elves being treated as outsiders to both elves and humans, not quite enough of either to be one of a group. That struck me hard. I was a teenager battling mental illness and autism without realizing it, and I felt like those half-elves. I read that they were diplomatic and understood others well. This too felt like me. I didn't play a half-elf then, and I still haven't nearly 20 years later (I just haven't had that many characters). But when I was developing my world and characterizing my cultural groups years later, those half-elven identities were still with me. I made my half-elves outsiders to everyone, the only hybrid race on Evanoch. But their outsider status made them free--with guaranteed judgment, there's no reason to do anything but what you really want. And I kept the spirit of the diplomatic notion; in my world, halflings are most renowned for diplomacy, and I felt it more intriguing to have my half-elves be expert artists, reflecting how the see the world in more creative means. All of that is to say that as I approach my half-elves, I can't help but wonder what groups will characterize them in this guide. Let's see how we can diversify the half-elves of Evanoch.