This
site has many suggestions. I reference it periodically.
I’ve read Agatha Christie (almost done with the Poirot and Miss Marple novels) and M.C. Beaton (finished Hamish Macbeth and several Marion Chesney titles). The Poor Relations series is good.
Ellis Peters and Dorothy Sayers are next. I used to watch Brother Cadfael years ago and enjoyed the show. I may tackle Father Brown by G.K. Chesterton when I’m done.
Yours in His Service,
~bella