Extinction Rebellion Protest

There have been conspiracy theories regarding the financial backing behind the protest group Extinction Rebellion.

Is there any evidence about the actual funder(s) behind Extinction Rebelion?

What facts can we find to support theories about the funding for this group?

Anti-lockdown protesters in VA
Several mainstream newspapers have claimed to have evidence that the protests against "lockdown" during coronavirus or the Covid-19 crisis. Some have even called them "AstroTurf" as opposed to "grassroots" protests, meaning that they were organized or funded by groups which have a different goal and a lot of money, rather than by activists interested in their purported goal of ending lockdown.