Bourgeois is an action. It is relationship to another group of people. The bourgeois extracts value from other people through ownership of the means of production. Bourgeois are people who take money from other people simply by owning things.

Look at Dentists for example. You go to a Dentist office and there's different levels of employees there. There typical a bunch of assistants who do the menial cleaning work and then there's 1 or 2 top level dentists that own the office. The top level dentists come in and glance at the teeth after the low level assistants do the cleaning. By owning the practice and overseeing the teeth cleanings, the top level dentists are extracting labor value from the lower level dental cleaners.

There is a Dentist in my town who owns a Dental Practice and is also a landlord who owns dozens of houses, which he uses as rental properties. This guy is Bourgeois.

Are dentists inherently bourgeois? No. Is the act of doing dental work inherently bourgeois? No.

Somebody is bourgeois if they collect money by owning things made by somebody else.

Streamers, Youtubers, and influencers as a whole are artisans. The ones who are big enough to employ editors (key word employ) can be said to be petty bourgeois.

Only if they own their own camera

They're definitely petitbourgeois. Also in this case, the one getting milked is the viewer, not the streamer. The bottom line is selling products to people through ads.