Feitosa is indeed a really good high kicker, but nos as powerful as Aerts or Crokop...
another one is Badhr Hari, he really can throw them like the thai boxer, with a lot of power and the bone hitting the neck first, really technical.

anyway, at that level, they're all good, I trained with some of them, and I can tell you that one high kick from lebanner is really something you have to block :-)