TBH, “libertarianism” was originally a left-wing ideal. Proudhon famously said “property is theft” and Malatesta (the most famous libertarian from Italy, where I live) was an anarchist. Right-wingers just co-opted the term like they did with many others.
(like they co-opted d’annunzio, a famous Italian poet. Now everybody knows him as “a fascist” but the nation he founded, the free state of Fiume, was the first nation to recognize the USSR (and the USSR recognized them back, irrc) He was also a member of a left-wing party, saying he was “going towards life” But as always, fascists appropriated a lot of things ideated by him. Worker’s unions had real power in Fiume, compare it to fascist Italy where they were basically 100% subservient to the party and you start to get a more nuanced and “controversial” picture of d’annunzio and Fiume. I suggest people that believe him to be a fascist to study him more, that’s all, from a guy that lives in Italy and has studied him. Rant over. )