One question that I'm curious about with respect to EA strategy is the extent to which people are or are not willing to change not just specific organizations they might donate too, but overall cause areas that they consider important focuses. I'm especially interested in "average donors" and people who are not necessarily explicitly EA -- I think this question is quite meaningful with respect to what kinds of outreach most generate value in the world.
Is there any research into this topic people could point me to, either from within the EA community or elsewhere?
Rethink Priorities' analysis of the 2019 EA survey concluded that 42% of EAs changed their cause area after joining the movement, 57% of change was away from global poverty, and 54% towards long term future / catastrophic and existential risk reduction.
Rethink Priorities, and Faunalytics also have much content on how to do effective animal advocacy, which would likely be useful for your purposes.
This is probably not the extent of research that Rethink Priorities has on this issue, but it's what I could remember reading about.