anarchist organisational practices are real
people have been creating solutions to counter "The Tyranny of Structurelessness" for many decades now
coarsely put, anarchists (and work/housing co-ops, and protest groups) most generally favour consensus-process with proper anti-slow facilitation and role rotation, vs the [usually] majority voting systems and power dichotomies that are the style of communism (see democratic centeralism)
though many places just don't mention this essentially counts as anarchism (or libertarian socialism), cos a) the stigma, b) they just don't need to or know to, c) they do, just behind closed doors
"horizontalism/horizontalidad" has been a good descriptor
https://www.seedsforchange.org.uk/guides
https://www.radicalroutes.org.uk/structure-and-governance
see also sociocracy, and Murray Bookchin
and the whole range of https://en.wikipedia.org/wiki/Libertarian_socialism plus https://en.wikipedia.org/wiki/Left_communism in general