I got a weird, mixed batch of characters I look at and say "that's so me frfr" and most of them are on my kinlists. The main ones having the some of the closest connections and sense of relatability, obviously, though it's not consistent who's my main fictionkin (unless it's Wanderer or Gaara) =u=;

Otherwise, I think it's just much more common for me to relate to outcasted characters, characters with defensive demeanors or who don't let their guard down easily, characters who spend a lot more time in their head or thoughts than with people, and also highly sensitive characters!

I'd add some other traits, but this is already a long response + these traits can me feel insecure.