The cast of The Greatest Showman brought to life figures surrounding the world of P.T Barnum's iconic circus, both fictional and based on real people. The Greatest Showman follows the life of PT Barnum and the origin of his world-renowned circus, including his recruitment of individuals to join the sideshow. Historically dubbed as "freaks", the real members of the Barnum & Bailey Circus all had something that made them stand out from the crowd. The movie softens the real way Barnum presented these people for public entertainment, but the cast also helps to humanize them.
https://screenrant.com/greatest-showman-musical-cast-real-life/