Pet peeve: there is no Nobel prize of economics, Alfred Nobel didn't include "economy" in his will. Instead there is a "Nobel Memorial Prize in Economic Sciences" whose purpose is to give credibility to the unscientific field of economics. The prize itself is mostly awarded to neoliberalists economists and does not often represent the majority views in the field.
It's commonly called the Nobel prize of economics. That it's not a classic Nobel prize is mostly finance jargon.
> prize itself is mostly awarded to neoliberalists economists
Source? The period in which neoliberal economics won the prize was when neoliberal economics was in vogue (and most successful and producing useful theories).
The price is awarded exclusively to neoclassical economists, because it's effectively a marketing tool for neoclassical economics, which is the economic theory base of neoliberal shareholder capitalism.