Instruction:
Classify the following celebrities as sports or acting personalities or both : Arnold Schwarzenegger, Brad Pitt, Kevin Durant, Shohei Ohtani, Harrison Ford, Dwayne Johnson, Jason Statham, Stephen Curry, Robin Williams, Scarlett Johansson, Tom Brady, Patrick Mahomes

Response:
Many athletes are known to do cameos in movies and a have a couple of their own sports related movies. Ignoring those few roles, I would classify the celebrities mentioned as :

Actors who were not sports personalities include Brad Pitt, Harrison Ford, Robin Williams, Scarlett Johansson.

Sports personalities who have not taken up acting as a major career (yet) are :
Kevin Durant - Acted in Thunderstuck and other movies and documentaries, but not a mainstream actor.
Stephen Curry - Did a few cameos and documentaries.
Shohei Ohtani and Patrick Mahomes only appear in sports documentaries and  tv series.
Tom Brady had a major plot role in '80 for Brady' and cameos in other movies, but he is still largely a sports personality.

Actors with successful sports background are : Arnold Schwarzenegger (body building), Dwayne Johnson (Wrestling) and Jason Statham (Diving)