Duke, Marquis, Count, Viscount, Baron.
These are known as the five ranks of nobility, and the higher you go up, the more prestige you get.
Titles can be based on either Family or Land ownership rights. In my world… in Europe, nobility was decided by the amount of land one was given to control…
I think.
This gave birth to many different conquests for land and many different nobles arising.
And many people controlled more than ten-thousand acres of land.
But I don’t know if that applies here as well.