Publishers Weekly does a great service by including a regular feature in which they list many book club picks, some with celebrities leading them and some you may not have heard of.
There are a number of book clubs included that focus on diverse works such as the Jewish Book Council Book Clubs, Mocha Girls Read, Sapph-Lit, and the Subtle Asian Book Club. Some of them have their own dedicated websites, some are based on Substack, and others ariden organized on social media.
A rotating book display with a small footprint would be to pick one or two a month and focus on their recent and past picks. I would avoid those which pick well known books unless you want to do a "Try these titles while you wait for [popular book]" display. Picks by Reece's Book Club or Read with Jenna tend to have holds that build up quickly. Working on a display like this would be great readers advisory practice for a library worker who is new to readers advisory.
If you have local book clubs that either meet in your library or elsewhere in your community, you can include them as well. Promoting reading is a always something we should do. Not everyone will be able to come to the clubs which are directly sponsored by your library. Giving patrons online options and options outside of your building will encourage both reading and the discovery of books and authors they have missed. Don't see it as a competition.
