A Star Wars Canon? There have been 2 canons. The canon from the 1976 novelization till 2014 Disney reboot (includes the 6 movies and all books, comics, games, tv shows--even the infamous Holiday Special), then the Disney reboot carried only the 6 star wars movies, the clone wars cartoon over, along with all new Disney made movies (sequel trilogy etc.), tv shows, books, and games.
The purge of all pre 2014 books, games, and comics from Star Wars canon caused a massive outcry and schism in Star Wars fandom that lasts to this day, although the Mandalorian has alleviated it somewhat by providing Disney Star Wars material that is actually enjoyable.
Before the Disney buyout, the massive canon Star Wars had was its main advantage over Star Trek. Everything, from an obscure 1970s tie in comic book to the latest AAA game, was canon. You couldn't say that about screen-only Trek canon. Disney wiping all that out removed Star Wars' primary advantage over Star Trek.