I don't know if there's a list, but I found this video from a simmer who analized the system of gaining/losing weight/muscle. I hope this will help you.
From what I’ve noticed, swimming, playing basketball, and even using the punching bag all count as "exercise" for weight management. Dancing is another fun one that fits better with some sims’ personalities, especially if they’re outgoing or creative.
For kids, it’s tricky since their options are limited, but I think activities like swimming or playing on the monkey bars might help a bit. I wish the game tracked more subtle movements, like gardening or even active careers, as exercise.
