Incidentally, John H. Kautsky’s claim of the unorthodoxy of his arguments – that Marxism and Leninism are two different ideologies that use the same terminology, and that Leninist “Communism was not anti-capitalist and was not relevant to industrialised societies but to underdeveloped ones” – are perhaps not so unorthodox these days, at least within academia and within my limited interaction with it.
His other books about capitalist development and underdeveloped nations might be worth looking at too.