Neither of those three are pure or near-pure socialist (more communist dictatorships) as well as that in neither of them you see only shantytowns. For me this is more proof that pure or near pure socialistic states don't exist, just like there are no pure or near pure capitalistic states. There's very little black and white, but plenty shades of grey (more then 50 )
Okay, shades of grey, I agree.
With that being said, I think it needs to be stated (for the benefit of this conversation, not a knock on you) that governance does not imply economic policy. Yes, I know, civics is not very sexy, but maybe we should brush up on it.
Just because a country is a dictatorship does not automatically rule them out of being socialist, nor any other economic policy; it's an erroneous red herring to bring it up.
Socialism is defined as the government owning all and using central planning; the definition never mentions what type of government needs to be in place.
Cuba is socialist and a dictatorship. Venezuela is socialist, but a democracy. (You could argue on the way to dictatorship since Maduro did jail his opponent over made up charges to keep him from winning.) Hong Kong (prior to China rule) was a dictatorship, although benevolent, and capitalist.