Leftism isn’t inherently anti-hierachy. Rather, different leftists take issue with different types of hierarchy. Marxists tend to hate class hierarchy, Marxist-Leninists tend to believe it to be a useful tool in developing to a stage where Socialism is possible, and Anarchists tend to think that all hierarchy is unjust, preferring mutualism.

Then there are Left-Comms, who, depending on country, either love Marx and Lenin but reject Marxism-Leninism, or reject Lenin and purely love Marx. They tend to prefer Council Communism rather than Vanguardist Marxism-Leninism, as they believe councils are justifiable as they are democratically participated in but reject Vanguardism.