I feel like in a world where China, a united Korea, Taiwan, the Philippines, the Soviet Union, and Vietnam are all communist; the Japanese communist party would be radically more successful. Even in our own timeline they almost succeeded, and in this one where all of Japan’s major trading partners are communist, and there is no strategic reason for the US to keep a tight leash on them, I don’t see why they couldn’t also go red.

Same with Indonesia, India/Sri Lanka, Egypt, Libya, and Brazil.

Also a socialist control of the entrance to the Red Sea would instantly make that confederation of countries (Yemen, Somalia, Eritrea, Ethiopia) one of the wealthiest and most influential world powers on this map. Control of that geopolitical area would give those countries an absurd amount of dominance and political power due to them being able to hold hostage a massive percentage international shipping, the oil trade, international trade, and maritime traffic.