Reader profiles, discovery channels, and KU vs. wide data for every sub-genre.
Source: Circana BookScan 2024, Penguin Random House reader research, NPR Books.
KU % = share of the Amazon top 50 enrolled in Kindle Unlimited. High = binge readers who subscribe. Low = readers who buy outright, often across platforms.
Written Word Media 2025 Indie Author Survey + Circana BookScan data.