Can you elaborate on how Marxist-Leninists “use Marx’s name while rejecting his philosophy?” Lenin’s major advances on Marxism include analyzing imperialism as a higher stage of capitalism, something Marx lived to see only the very beginnings of, as well as organizational theory. Lenin represented a return to Marx, considering the Second International had at that point vulgarized Marx into a reformist. What part of Marxism does Marxism-Leninism reject? You specifically mention philosophy, but Marxism-Leninism affirms dialectical materialism, so I assume you mean something else.

Further, Marxism-Leninism is largely an ideology practiced in the global south, not so much the global north. Perhaps I’m misreading you, but you make it seem as though it’s largely western, and that this is why it “rejects” Marx. More common in the west are Trotskyists, who still uphold Lenin, or Eurocomms, who also uphold Lenin. The number of Marxists that reject Lenin, even if they disagree with AES countries, is extremely small, period, global north or south.