Examine previous periods where "world domination" was tried (Roman Empire, Holy Roman Empire, German Empire, etc.)
Start with the Holy Roman Empire as a model where the "kings" were vassals of the Pope, under the King of Kings the Pope-appointed Holy Roman Empire.
That where you find all the significant and well documented bloodlines (nobility) that still exist and still intermarry to maintain property rights, ancient titles, and "class distinction over the "serfs"
There is the model, and by today standards the feudal system is a totalitarian government, fascist in nature.
Look at the "think tanks" and "power behind the throne"
of Bilderbergs, Knights of Malta, et al.
In particular look at the pan European "le Cercle" once known as the Pinay Group