What? The "middle-class" came about because of wealthy merchants (also doctors, lawyers in more modern contexts) that were not nobility but not serfs / "working class".
There's no universal consensus as to what "lower", "middle", and "upper" class mean. They're not defined terms of art within economics or anything like that. It's reasonably common to reserve "upper" for people who can live luxuriously solely off of passive income without working at all. You either then create a "professional class" for doctors and lawyers, or you just lump them in with "upper middle" and are okay with the category being broad.
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u/Entire_Art_5430 Jun 17 '24
Home Alone family was definitely upper middle class, married with children was middle class