I noticed that 'progressive populism' somehow disappeared from my list...
btw: While it is an exaggeration to say that KM left us no conception of socialism, his and Engels' remarks were relatively few (with respect to corpus of their work), pretty generalized, and often embedded in their critique of capitalism. Seems clear that M thought that socialism would substitute conscious, overall planning for market exchange as dominant social process for economic coordination. But his fairly consistent references to 'associated producers' also makes it clear that he perceived planning as associative, cooperative, and democratic, not bureaucratic or elitist. Michael Hoover