Contemporary:
* The Guernsey Literary and Potato Peel Pie Society by Mary Ann Shaffer and Annie Barrows: A heartwarming story of friendship and resilience set in post-WWII Guernsey.
* The Nightingale by Kristin Hannah: A powerful and moving story of two sisters in occupied France during World War II.
* The Book Woman of Troublesome Creek by Kim Michele Richardson: A beautiful story of literacy and love in Appalachia during the Depression.
* The Rosie Project by Graeme Simsion: A charming and humorous novel about a genetics professor on a quest to find his perfect wife.
* The House in the Cerulean Sea by T.J. Klune: A heartwarming and whimsical story about a social worker who visits an orphanage for magical children.
Historical:
* The Help by Kathryn Stockett: A powerful story about the lives of black maids working for white families in Mississippi in the 1960s.
* The Book Thief by Markus Zusak: A beautifully written story about a young girl who finds solace in books during World War II.
* A Gentleman in Moscow by Amor Towles: A charming and uplifting story about a Russian aristocrat who is confined to a hotel in Moscow after the revolution.
* The Hiding Place by Corrie ten Boom: A powerful true story of faith and resilience during the Holocaust.
* The Nightingale by Kristin Hannah: (This book also works well in the contemporary category, as it explores the lives of the sisters both before and after the war.)
Romance:
* Pride and Prejudice by Jane Austen: A classic romantic novel about social class and finding love in 19th-century England.
* The Love Hypothesis by Ali Hazelwood: A fun and sexy academic romance about a scientist who fakes a relationship with her lab partner.
* Beach Read by Emily Henry: A heartwarming and funny story about two authors who reluctantly team up to write a book together.
* The Hating Game by Sally Thorne: A playful and engaging office romance about two enemies who fall for each other.
* The Unhoneymooners by Christina Lauren: A hilarious and romantic story about a couple who accidentally end up on their honeymoon together.
Fantasy:
* The Chronicles of Narnia by C.S. Lewis: A classic fantasy series about a group of children who travel to a magical land.
* The Wingfeather Saga by Andrew Peterson: A beautifully written fantasy series with strong Christian themes.
* The Princess Bride by William Goldman: A classic fairy tale about a princess who is rescued by a dashing pirate.
* The Lord of the Rings by J.R.R. Tolkien: A sprawling and epic fantasy series about a hobbit who sets out on a quest to destroy the One Ring.
* The Hobbit by J.R.R. Tolkien: A shorter and more lighthearted story about Bilbo Baggins's adventure to the Lonely Mountain.
Science Fiction:
* The Martian by Andy Weir: A suspenseful and scientifically accurate story about an astronaut stranded on Mars.
* Ender's Game by Orson Scott Card: A thought-provoking and engaging novel about a child who is trained to fight an alien invasion.
* The Hitchhiker's Guide to the Galaxy by Douglas Adams: A humorous and wacky science fiction classic.
* Project Hail Mary by Andy Weir: Another great story from Andy Weir, this one about a scientist who wakes up with no memory of his mission.
Young Adult:
* The Book Thief by Markus Zusak: (This also works well in the historical category.)
* The Hunger Games by Suzanne Collins: A thrilling and dystopian story about a young girl who volunteers to take her sister's place in a deadly game.
* The Chronicles of Narnia by C.S. Lewis: (This also works well in the fantasy category.)
* The Giver by Lois Lowry: A thought-provoking and dystopian story about a society where everyone is assigned a role and memories are forbidden.
* To All the Boys I've Loved Before by Jenny Han: A heartwarming and charming young adult romance.
This is just a small sampling of the many great clean fiction books out there. I encourage you to explore different genres and authors to find what you enjoy!
You can also try using online resources like Goodreads or BookBub to find recommendations based on your interests.