In other words, real communism has never been tried.
What, however, is not subjective, is that the stated ideology of all of these regimes is derived from ML, and that there is a vast number of communist ideologies outside of ML. You're free to consider those equally bad if you please. I've not made any argument about that either.
It is a fascinating picture of exactly what keybored argued that the immediate reaction of people is to drag out strawmen like this.
Color me intrigued. Any good books to recommend?
This Wikipedia list is reasonably comprehensive: https://en.wikipedia.org/wiki/List_of_communist_ideologies
The main split is between "right-communists" and "left-communists" (hence Lenins "Left Wing Communism: An infantile disorder"; the Bolsheviks were considered "right"), where the "left" are those who rejected ML/Leninism on the basis of "democratic" centralism and the idea of a vanguard party.
Most of the anti-ML ideologies like council communism, anarcho-communism, libertarian Marxism are in that category.
Perhaps texts by Joseph Dejacques, Kropotkin, Rosa Luxembourg, Emma Goldman would give a reasonable introduction to those.