This page is the directory page for fandoms that have multiple canons. Harry Potter is probably one of the more famous fandoms that can serve as an example as you have both the books and the movies.

A more recent and more diverse example would be The Untamed/CQL/ Mo Dao Zu Shi universe. It has six-seven(?) canons as it has a novel, a live action tv series, a donghua(animated series), an audio drama, a manhua(graphic novel), and is about to gain another different donghua(animated series) and they all have different things, in fact the live action series deviates very heavily from the novel that was the first canon.