Do you seriously not notice that right there between the upper and lower class are the managers, supervisors, and directors? The middle class are a financial class, but that’s because they’re also a class with a distinct relation to the means of production. The workers are the ones that do the work, the owners are the ones that reap the profits, and the middle class are the ones that control the workers. They’re a special managerial class elevated above workers with special privileges and responsibilities, but they’re also always employees of the actual ruling class.
Then dumbass Americans just smeared everything together and now everyone says they’re middle class, whether they’re poor or rich lol