Sure. 'The Overstory' by Richard Powers is a remarkable 2019 fiction book. It focuses on trees and the relationship between humans and nature in a really unique way. Another is 'There There' by Tommy Orange, which gives an important look at urban Native American life.
The 2019 fiction bestsellers include 'An American Marriage' by Tayari Jones. It's a story about a marriage tested by the unjust incarceration of the husband. Also, 'The Silent Patient' by Alex Michaelides. It's a psychological thriller that keeps you on the edge of your seat. And don't forget 'Exhalation' by Ted Chiang. His short stories are always thought - provoking.