You peddling horsesh*t is unhelpful. Your fluid goal posts don’t help either.
Obviously any U.K. style “monarchies” and republics with a figurehead. Your best bet therefore would be Middle East monarchies, which are obviously a product of the extraction industry. So even that is not an argument.
Remember how China realized that the communist system isn’t sustainable and introduced elements of monarchy? No? Me neither, because they went with (very light) democratization.
If you want to talk facts, here: https://en.wikipedia.org/wiki/List_of_countries_by_GDP_(nomi...
But my favorite part is when I suggest you to look for immediate evidence in the real world and you’re like: “No, here’s a cherry picked article”. This disregard for facts is just plain offensive.