Sounds like projecting a little too much based on the historical main cold war allies/opponents. How much NSA-style pervasive espionage do you think is done by more conflict averse countries like Netherlands, Australia, Brazil, Singapore, Japan, Ireland, Finland etc? I'm sure everyone keeps some sort of tabs on neighbours, keeps some reasonable counterterrorism watch and trades intelligence with friendly countries and has a counterespionage dept, but probably a far cry from invasive and risky infiltrations like NSA does.

It's also practically less attractive to countries that are not superpower aligned: they have much less experience and resources, and diplomatically have more to lose if things go wrong.