History of ideas: western thought since 1945

Some time in the 1990s, I read an essay proposing that existentialism, structuralism, postmodernism are three identifiable stages in the evolution of western culture after the end of World War 2. Now I have been thinking that transhumanism, rationalism, accelerationism are three stages in the evolution of Internet techno-optimism since the 1990s. One could actually write a history of the West since 1945, in which this succession of six stages is the organizing principle, and everything else is somewhat epiphenomenal.