>>51222105>Dark>Magician Magicians in most media are seen as not actually magic, or using their magic for trickery/thievery. And whilst Dark-type tends to not be related to literal darkness or dark magic (that tends to be Ghost), it has dabbled with it in the past. It’s really not that hard to envision, especially if it’s a crooked magician/magic thief.
>Ghost>Musician Singing and spirits have been crossed over in past media plenty of times. This one in particular though, why can’t they relate singing to Ghosts? The design might take some from each and cross them together. If it’s themed after “darker” music like rock or metal they could lean into aesthetics the mainstream mummies find “spooky”.
>Fighting >Dancer Ignoring the fact we’ve already had a dancing Fighting-type or two, dancing is a physically intensive activity which best fits under Fighting as the type has covered sports and athleticism before. Dance-fighting (dances that are choreographed to look like fighting, or fighting styles that adapt dance moves or have a dancing flair to them) isn’t exactly obscure either. We already know Quaxly has a lot of leg strength so it’s not that hard to believe it’ll be a dancer that can deliver a hell of a kick.