The ultimate Game of Thrones spoiler?
Stop reading if you don't even want to know what the answer MIGHT be. I'll leave twenty lines of blank space before displaying the meme.
Unless I'm mistaken, at least two and perhaps three of these titles are reserved for the person who sits on the Iron Throne. And the do not at present (obviously) apply to Jon Snow.
They would be appropriate only if Jon ends up ruling the Seven Kingdoms.