Influential upon myself, I mean. Everyone else is doing it, at least for “American/white/politics/economics/mostly libertarian type guys” values of “everyone”. I suck at lists like this. It’s hard to give an honest answer, in part because I’m not prone to conscious conversion experiences, but mostly because I’m good at repressing things and so really find it hard to remember things I read that really hooked me at the time.
In any event, and in roughly chronological order: