Anarchist:
Cospaia city (now part of Italy), almost 400y of ANCAP organization, untill ot was anexed by Italy near the 1800s. One of the top tobacco producers of his time, and relatively more prosperous than all his neibours.
Not bad for a tiny city with a population of 300~600.
It even didn't have prision nor police, no cohertion was needed to bring it to existence, no war, a bit of good luck and one really bad surveyor mapping the land.
Cuba, Vietnam, China.. ther is a difference in being sucessfull and just "being" I won't say they are succesful now, and in the long run I believe they will end to exist, one or two generations after us probably.
https://mises.org/power-market/republic-cospaia-anarchist-renaissance-city
Really nice comment, mostly the last two paragraph.
Although in my experiences is the oposite with the "right-wing" of the subject, the more intellectual formation, deeper economic undertanding, more anarchist tend to be the people, and they also agree with what you said:
"That's because left-anarchism has more in common with capitalism than it has with communis"
I will add that from the ancap perspective, governament is not equal to state. A government is ok so far it is accepted voluntarily, in contrast, the state is always imposed using violence.