Look to Ford Foundation and Rockerfeller brothers.
The People’s Forum is a socialist organization that acts as project incubator. From its location in New York City, the Forum hosts events, readings, operates a cafe and a library, and publishes various cultural works and media. 1 It has collaborated with a number of radical-left and Marxist philosophers and activists.
Yes they are players, but their financial contributions pale in comparison to Qatar and the CCP - either of whom could buy them both and not notice the expanse.