As a lover of nonfiction books, I’ve noticed many of the same phrases being used for subtitles—something that doesn’t happen with fiction since “A Novel” or “Stories” are basically the only options. Some templates I’ve noticed:

• The Secret/Private Life of
• [X] in an Age of [Y]
• A Traveler’s Guide to
• The Race to
• A History of the World in
• How [X] Explains [Y]

What else should be on the list?