Politics are inherently inseparable from economics.
That doesn’t get you from “Democratic Socialism” to “Imperialism”, as evidenced by your own linked article.
They absolutely align with the US because of their political organization.
Per your own linked article, they remained neutral even after the end of WW2 and sympathized more with the Non-Aligned states than either of the two Superpowers.
Nowhere have I argued that socialist structures benefit from imperialism.