i think they would be the artisan class. they don't employ anyone, and there isn't a clear path they all follow to get there. it's likely their "business" will never expand beyond them. so they aren't affected as much by labor disputes or property stuff as the petty bourgeoisie. therefore they aren't as inclined to erratic change or reaction as the petty bourgeoisie. not that they don't have some reactionary tendencies on occasion. especially when they start getting proletarianized. this is a good article i read about that https://polclarissou.com/boudoir/posts/2023-02-03-Artisanal-Intelligence.html