During the 2022-2023 school year, PEN America tracked 1,477 instances of book bans, affecting 874 unique titles. The found that the bans mainly target books with LGBTQ+ themes, characters of color, and discussions of race and racism.
Key stats:
"These categories are often overlapping; several content areas intersect in most books. Together, the content of banned books illuminates how the movement to censor books affects a diverse and varied set of identities, topics, concepts, and stories."
https://pen.org/report/banned-in-the-usa-state-laws-supercharge-book-suppression-in-schools/