I don't exactly understand the question about "adding anything." It's unlike a dish where you need more salt or spice on your profile. Yes, you need an activity off-campus if you can, but without more details, the descriptions all sound generic. Again, it's your choice to give us details, but we can't read your mind to give you advice if you need anything extra. It just sounds like box-checking.
What I think you are missing is reaching out to the schools. Have you found mentors to give you confidence in becoming a physician? If you are with BSU, have you connected with SNMA or any mentoring organization for aspiring Black physicians?