Ranking of abilities:

Commoner class= worthless in this world has a hard time getting a job

Merchant class= a little below average person learns 150% more than commoner class

Knight class= average person= learns 200% more than commoner class 

Baron class =can go somewhere in life learns 250% more than commoner class

Viscount class= above average learns 300% more than commoner class

Count class = little talent learns 350% more than commoner class

Earl class = has some talent learns 500% more than the commoner class

Marquis class= lesser genius learns 1000% more than commoner class

Duke class = genius learns 5000% more than commoner class

king class = greatest genius learns 50000% more than commoner class

 These aren't if they are royalty just a class division similar to it , it might change later but know this is what it is and these aren't power levels just reflect potential and how they can use their ability