I can think of two examples that worked fairly well: Allende and Morales. It's debatable to what degree they were democratic socialism or social democracy (give

I can think of two examples that worked fairly well: Allende and Morales. It's debatable to what degree they were democratic socialism or social democracy (given they both exist on a fairly ambiguous spectrum) but both nationalised various industries and promoted social justice and growth of cooperatives. I suppose you could say there's central economic decision making in the form of regulation and nationalisation, but this contrasts with the kind of economic planning that's been proven to be disastrous in Marxist-Leninist countries. Hopefully Gabriel Boric will prove to be another successful example.