Since you have the Commonwealth realms alphabetized among themselves, irrespective of continent, I suggest changing "Continent (Commonwealth realm)" ==> "Commonwealth realm (Continent)".
It's interesting the difference that's placed on "Monarchs" and "Dictators". A monarch is just a single sovereign head of state. The Kim family is just as much a Monarchic dynasty as the British or Japanese monarchies.
Thats an interesting point although the North Korean government does operate like a monarchy it still officially claims to be a socialist republic and so it doesn't count. The same thing could be said for the Syrian Al-Assad Dynasty.