I don't see Disco Fever, Didgeridrongo, Boston Breakdance, and Proletariat Posedown anywhere when I use the Animated Prop tool for Spy, Sniper, Scout, and Heavy respectively.

Best of all, the Didgeridoo used in the Didgeridrongo taunt exists in the game, but as I can see, the taunt it was used for doesn't exist in the game.