Start with high-confidence holocaust history for teens books, then narrow by subgenre or adjacent topics.
A Train in Winter
Caroline Moorehead
The Daughter of Auschwitz
Tova Friedman
The Tattooist of Auschwitz [movie-tie-in]
Heather Morris
Advocate for the Doomed
Richard Breitman, Barbara McDonald Stewart
Someone Named Eva
Joan M. Wolf
My Bridges of Hope
Livia Bitton-Jackson
Gangsters Vs. Nazis
Michael Benson
Yes to Life
Viktor E. Frankl, Joelle Young
Man's Search for Meaning: Young Adult Edition
Viktor E. Frankl
The Librarian of Auschwitz
Antonio Iturbe, Lilit Thwaites
War Games
Alan Gratz
The Einstein Vendetta
Thomas Harding
The Nazi Mind
Laurence Rees, John Sackville
The Nuremberg Trial
Ann Tusa, John Tusa
Dutch Girl
Robert Matzen, Luca Dotti