Here’s how I currently visualise the main currents of communism from Lenin up to around the 1950s/1960s. The next major addition will be the dissident strains caused by the Hungarian and Czech ruptures, the development of Eurocommunism, and the fragmenting of East  and Southeast Asian communisms. This visualisation draws particularly on the work of Isaac Deutscher, Fred Halliday and David Priestland.

Comments most welcome as always.