The Three Languages of Politics
One of the simplest, most illuminating books I've ever read is Arnold Kling's The Three Languages of Politics.
Kling's idea: conservatives, liberals and libertarians
about political issues in terms of three, separate axes:
liberals tend to view issues on the
conservatives view issues on the
libertarians view issues in terms of
Kling wrote this book in 2013 (pre Trump), and last I heard was toying with a axes (cultured/elite vs ...not) to represent him and his followers, but I'm not positive where he's landed on that. I prefer the classic, three axes version myself.