[Question] Primers for charity evaluation?

Asking for reccomended readings to learn about the methods of charity evaluation.

Is there a well developed methodology? A unified method?

Also interested to talk to people about charity evaluation.

I am trying to figure out how Christians can be reached in terms of eval, especially because EA messaging really isn’t landing too well in my conversations with Christians.

I think it is important because 1) 80% of churchgoers give to non-profits on top of tithing, 2) Christian giving is highly centralised, 3) Christians are underexposed to effectiveness considerations, 4) I estimate USA churches spend $13B on charity efforts.