Start with high-confidence buddhist thought books, then narrow by subgenre or adjacent topics.
Thoughts Without a Thinker
Mark Epstein
The Zen Teaching of Bodhidharma
Bodhidharma, Red Pine
Dipa Ma
Amy Schmidt, Joseph Goldstein
Why Buddhism Is True
Robert Wright
Already Free
Bruce Tift MA LMFT, Tami Simon
No Self, No Problem
Chris Niebauer Ph.D., Chris Niebauer
A Gentle Rain of Compassion
David R. Shlim
As It Is, Volume II
Tulku Urgyen Rinpoche, Marcia Binder Schmidt