> RMS is pretty unambiguously leftist and libertarian
FYI libertarians nowadays, especially in the US, are basically anarcho-capitalists, and considered right on the political spectrum.
> Left-libertarian[14][15][16][17][18] ideologies include anarchist schools of thought, alongside many other anti-paternalist and New Left schools of thought centered around economic egalitarianism as well as geolibertarianism, green politics, market-oriented left-libertarianism and the Steiner–Vallentyne school.[14][17][19][20][21] In the mid-20th century, right-libertarian[15][18][22][23] proponents of anarcho-capitalism and minarchism co-opted[8][24] the term libertarian to advocate laissez-faire capitalism and strong private property rights such as in land, infrastructure and natural resources.[25] The latter is the dominant form of libertarianism in the United States,[23] where it advocates civil liberties,[26] natural law,[27] free-market capitalism[28][29] and a major reversal of the modern welfare state.[30]
https://en.wikipedia.org/wiki/Libertarianism
RMS himself is very anti-libertarians in their US form ( right-libertarian in the Wiki article):
https://stallman.org/glossary.html#anti