So, just for disclosure, I'm a librarian IRL. And while I've not got a Discord Book Club in my pocket (our only Discord server is for teen use), what I do have is a Facebook Group that's a bookclub that chats twice a month for people to share what they've been reading with as much/or as little info about their opinions as they like. Open to ANYONE really, but direct invitation to @cirim13 since the magic words "book club" were mentioned. Night Owls Book Group - We chat at 9pm Eastern on the 1st and 3rd Thursdays of each month. It's an aspect of the job, I'm always all for talking about books & sharing recommendations of my own.
C