There is high-quality evidence supporting some of these orgs, but for the think-tank types, giving to them would be part of a more hits-based giving approach.
Also, I think many people would say that economic development in LMICs in particular is neglected and underfunded. Stefan Dercon’s work (ex-chief economist of Britain’s aid agency and development economics professor) challenged my previous assumption that LMIC governments are already optimising for broad-based economic growth.
I think you’re asking a general question of whether we should politicise or depoliticise issues we care about. I pretty much always think the answer is depoliticise, because very crudely, I expect the right and left to be in power about 50% of the time in 50% of the places, so if we want the laws we want everywhere, we should depoliticise things we care about.