I noticed almost all of the top recommended books are written by men. A quick skim of the first 100 books on the home page and I see ~4 by women. The Fiction category was largely the same. Nothing against these books, I have read many and enjoyed them, but that's a pretty crazy ratio.
I will add some personal recommendations to maybe get picked up by the algorithm:
Science fiction:
- Parable of the Sower and Kindred, both by Octavia Butler
- The Lathe of Heaven and The Word for World Is Forest, both by Ursula K Le Guin (also The Left Hand of Darkness, which I did see on there)
Non-science fiction:
- Fleishman Is In Trouble by Taffy Brodesser-Akner
- Slouching Towards Bethlehem by Joan Didion (essays)
- Pride and Prejudice by Jane Austen
- The Bell Jar by Sylvia Plath
I'll add my favorite. The Anvil of the World. rip Kage Baker.