Apart from Marxism, Lenninism and Communism; mostly Atheism...

You also have the Orthodox Russian Church which (I believe) is a quasi-Christian/pagan state church.

Marxism is a political, economic and social philosophy that primarily seeks to understand how society works and how to change it. Neo-Marxism is a term sometimes used to refer to some of the different strains of Marxism that developed in the 20th century. Strains such as structural Marxism and Western Marxism.

Trotskyism is a political ideology that developed from the ideas of Leon Trotsky, a key figure in the Russian Revolution, while Marxism refers to the political, economic, and philosophical theories developed by Karl Marx and Friedrich Engels. Trotskyism emphasizes the importance of international revolution and permanent revolution, whereas Marxism focuses on class struggle and the eventual establishment of a classless society.

Some words that rhyme with Marxism are schism, prism, and criticism.

Living Marxism was created in 1988.