Yeah, the only one I seem to have is the alternate version of marie's outfit but idk how I even got that one
Marie and Ran both should come with alternate versions of their outfits. If you complete Ran's "Too Hot to Handle" sidestory, you get an outfit for her.
ETA: On Dearonnus offical patreon (artist of NBD) they state that 22 total outfits are in the game. Some are color variants of other costumes
2nd ETA/R: Helps the slums people with a hidden character specifically enough times and you'll get an outfit