The Wealthy status is mainly just a very rich person, who no longer needs to work if they do not wish too, that is not related to, or in good favour with, the king. They are quite often business owners and landlords.
A Wealth can be demoted to Middle-class if they loose a large sum of thier money, and can be premoted to nobel if they get the king's good-graces.
Occupations and Profesions available for the Wealthy:
Breeder
Teacher
Landlord
Slave Trader/Dealer
Merchant
Assassin
Messanger
Innkeeper