Professionally I have (recently) read:
On Killing
On Combat
How Doctors Think
The Speed of Trust
If I knew Then
W.I.N. Vol 1 and 2
Clarity
The Checklist Manefesto , Better, and Complications (three books)
just to name a few
Personally I read a lot of sci fi, fantasy, thrillers, news, historical fiction, and professional development. .
Some of the authors I have been blessed with:
Glen Cook, JRR Tolkien, Paul Anderson, Stephen Prussfield, Robin Hobb, Jim Butcher, Chris Farnsworth. Joel Rosenberg, Brom, Lynn Abbey, Robert L. Asprin, Piers Anthony, just to name a few.