What was the a way a tomb is decorated and the items buried with the dead tell us about the person buried there

How a tomb is decorated and what is in a tomb can tell a researcher or archeologist a lot about what type of person is buried within without even knowing who is in there. Different classes of people got different types of burials. A King might have had all of his servants killed and buried with him, a wealthy merchant might have been buried with lots of gold as an offering to the gods, a poor person would likely not have a tomb.