The Raging Heroes Shedu head version is my all time favorite.
MOM miniatures makes a nice one too:
https://discourse.chaos-dwarfs.com/t/cd-by-mom-miniatures/26932
Food for ideas here. If you don’t know where one comes from, I’m certain if you poll there group here about a specific model someone can put you in the right direction: https://discourse.chaos-dwarfs.com/t/mounted-chaos-dwarf-characters-tauri-lammasi/1817