Was looking more at the definition of lumpenproletariat the other day:

An oft-cited description of the lumpenproletariat comes from Marx’s The Eighteenth Brumaire of Louis Bonaparte. The Parisian lumpenproletariat that Louis Bonaparte recruited during the French class struggles of 1848–1851 in order to defeat the proletariat and ultimately to seize state power consisted of the following:

Alongside decayed roués with dubious means of subsistence and of dubious origin, alongside ruined and adventurous offshoots of the bourgeoisie, were vagabonds, discharged soldiers, discharged jailbirds, escaped galley slaves, swindlers, mountebanks, lazzaroni, pickpockets, tricksters, gamblers, maquereaus, brothel keepers, porters, literati, organ grinders, ragpickers, knife grinders, tinkers, beggars – in short, the whole indefinite, disintegrated mass, thrown hither and thither, which the French call la bohème (1963: 75).

As self-interested hustlers whose services are for sale to the highest bidder, the lumpenproletariat – a term Marx and Engels created – is typically co-opted, as Bonaparte demonstrates, by reactionary movements. However, Marx’s taxonomy indicates the difficulty of locating a synthesized and explanatory definition for a term presented here as an ‘indefinite’ alterity with no clear framework of composition.

https://link.springer.com/article/10.1057/s41296-021-00487-9

I think of that categorization as characterized by an inconsistent or absent relationship to work and production that leads to a lack of class consciousness (lumpen) despite being closer to the working class than to any other class (proletariat). The "self-interested hustler" phrase stood out to me as a good summation.

Someone who owns their own business could certainly fit this, but I suppose it comes down to how dependent you are on someone else's means of production (the point made elsewhere in this thread about YouTubers depending on Google is a good one).