It seems to me that income is in effect an abstraction of a person's social class. Therefore, I wonder if it might be more effective to look at the factors tha

It seems to me that income is in effect an abstraction of a person's social class. Therefore, I wonder if it might be more effective to look at the factors that actually separate different social classes. For example: What percentage of a population is self employed and/or employed in a role with significant autonomy? What percentage of a population owns their own house? Of those who own a house, how much control over their house do they have (e.g. you cannot add an extension to a multi-unit house even if you own it and you likely cannot put in a workshop due to noise)? How do these measures change based on how desirable the location is (e.g. top tier cities, suburbs, etc.)? How easy is it for a given population to acquire the means of production? E.g. if someone doesn't like the products that the corporations are making, how difficult would it be for them to try to make an alternative? What level of political office could a member of a given population realistically run for?