I don't think e.g. wikipedia agrees with such a restrictive view (there are many form of socialism). Also many of those countries have their main left wing part

I don't think e.g. wikipedia agrees with such a restrictive view (there are many form of socialism). Also many of those countries have their main left wing party named "socialist party". (I think it's cultural difference between US and rest of world where the US considers socialism ~= communism)