Most of the schools I'm applying to require teacher recommendations, but some also give you the option to submit one from someone else as well. My counselor suggested coaches but I don't play any sports and the coaches for my academic extracurriculars are also just teachers I've had, so who could be someone I could ask for a letter?
If you work the supervisor would be good idea. If not just ask an EC coach to write a letter from a EC perspective not a class perspective.
To keep this community safe and supportive: