Phebe:

The Nightingale by Kristin Hannah
Empire of Pain by Patrick Radden Keefe
A Swim in the Pond in the Rain by George Saunders
Lincoln in the Bardo by George Saunders
10th of December by George Saunders
Fox 8 by George Saunders
The Rosie Project by Graeme Simsion
The Searcher by Tana French

Phil:

Dune by Frank Herbert
Temeraire series by Naomi Novik
The Heroes of Olympus series by Rick Riordan
Mistborn trilogy by Brandon Sanderson
Wuthering Heights by Emily Bronte
Pride and Prejudice by Jane Austen
North and South by Elizabeth Gaskell
Emma by Jane Austen
Heart’s Invisible Furies by John Boyne
The Century Trilogy by Ken Follett
Demon Copperhead by Barbara Kingsolver
The Combat Codes by Alexander Darwin
Jade City by Fonda Lee
Edible Economics by Ha-Joon Chang

Isaac:

Protector of the Small series by Tamora Pierce
Alanna series by Tamora Pierce
The Boys in the Boat by Daniel James Brown
Unbroken by Laura Hillenbrand
Harry Bosch series by Michael Connelly
1491: New Revelations of the Americas Before Columbus by Charles C. Mann
The Earth is Weeping by Peter Cozzens
Of Wolves and Men by Barry Lopez