It depends on the culture you are considering. Examples are:
There was no economy back then so...they belonged to no social class.
aristocracy
the priests belong to the upper class (1st class)
the priests belong to the upper class (1st class)
i think mst of them belong to the schedule tribes and schedule class...
The serfs belonged to the poor class.
Writers can belong to various social classes, as their income and status depend on factors such as their success, recognition, and opportunities. Some writers may achieve financial success and belong to the upper class, while others may struggle economically and belong to the middle or lower class. Ultimately, a writer's social class can be fluid and subject to change throughout their career.
lowerclass
The social class that most people belonged to in ancient Egypt was merchants. There were few people in the nobles class.
lahing sazon
Merchants were in middle class.
Jose Maria Morelosbelongs to a low class known as the Mestizos.
They were middle class people.