In case you haven't seen it already, Organise Magazine has put out an excellent series of articles called "Let's Talk About..." criticizing various facets of Extinction Rebellion.
Finance and Business:
Solidarity, Autonomy and Decentralization:
Roger, Brand Management and Other Problems: http://organisemagazine.org.uk/2019/04/24/let's-talk-about-roger,-brand-managment-and-other-problems
Sunbeam City is a anticapitalist, antifascist solarpunk instance that is run collectively.