I can't recall any proponents of neoliberalism.
This article is a good example. Everything is euphamized (neoliberalism is market fetishism). Nothing is addressed directly. There's a disagreement between camps, but nowhere does it bother to delve into what they disagree about specifically.
It's also simply not true that economics is monolithic, or that the majority of policies are based in economics of any flavour.
The EU was (i suppose, see first paragraph) a neoliberalism exercise. It promoted free trade, and dismantled all sorts of industrial structures and regulations as part of that. But, the actual goal was peace, moreso than prosperity. The history of us-china trade is similar.