Kings and queens (or emperor and empress! Or in Russia, Tsar and Tsarina. In Turkish/Arab societies, Sultan or Emir), then prince and princesses. After that come nobles like archdukes, dukes and duchesses, counts and countesses. Marquesses and marchionesses, as well as earls, viscounts, viscountesses, freiherrs, barons, and baronesses. Farther below that you get knights and esquires.