Saying that doctors and waiters are both 'working class' may satisfy some ideological preference of yours, but it will reliably confound understanding and any i

Saying that doctors and waiters are both 'working class' may satisfy some ideological preference of yours, but it will reliably confound understanding and any improvement that could be downstream of that understanding. People have long been able to understand the notions of 'professional class' and 'service sector'; I recommend taking advantage of their intellectual legwork.