I had a feeling the 1988 Crystal Light National Aerobic Championship video had something to do with the new taunts. I could only find the original dances for these 7 classes. The Pyro’s taunt must be custom made, however the Spy’s taunt does exist in the video but I did not include it because to was hard to sync up. The Spy’s taunt can be found @4:51 in the Original video I linked in the description. Please enjoy!
TF2 Manrobics Video:
Original 1988 Crystal Light National Aerobic Championship Opening: