If you missed the October 6 webinar on Comic Books, Coding, Cosplay, Crazes, & D&D: Making Libraries a Hub for the Inclusive Nerd Culture, set up a free account on the Florida Library Webinars' Niche Academy page, log in, then follow this link to find the video.

A lot of it is about public library programming for kids and teens, but at about 26 minutes in, they mention several graphic novels with diverse characters, which could be helpful for collection development.