I, too, loved that aspect about the Jedi Order! It's no mistake that the Jedi Council is the most diverse set of characters we see in ... the entire set of Star Wars films, I think?

(We see Barriss worship a Mirialan idol in TCW, and basically everyone who is not Mace Windu or in Yoda's disciple-lineage seems to have some culturally specific clothing according to various sourcebooks, so I'd say the Jedi being multicultural is canon.)