Matthew Syed from the Flintoff, Savage and the Ping Pong Guy podcast writes a lot of thought provoking books, such as Rebel Ideas.
Daniel Kahneman’s Fast Thinking and Thaler and Sunstein’s Nudge also make one think.
William L. Shirer’s The Rise and Fall of The Third Reich One of the best history books I have read, though recently realised that I lost my copy when we moved home a few years ago.
While I mostly read non-fiction books, I do like to read historical novels for a bit of escapism typically over Xmas or on holiday in the summer. Master and Commander, the Hornblower and Sharpe are obvious ones. More recently I have got into the Macro and Cato series by Simon Scarrow.