The "My Contributions" feature contains a list of Private People. The list comes from 2 kinds of Family Tree profiles.
Living people
When you add a living person to Family Tree, that person is added to the Private People list to protect their privacy. Living people also show up on this list if their information was merged from Ancestral File.
Confidential people
System administrators can determine that a Family Tree person must be confidential. If you added the name, the record moves to your tree. Status as living or deceased does not impact confidential records in Family Tree.
The need to make a person's record confidential is rare. The standards required to set a record as confidential are high and it is a status that you cannot request.
Transition to personal Family Tree
In August 2014, FamilySearch changed the how information about living and confidential people was handled.
During this transition, FamilySearch created copies of the living and confidential people whose data you could see in Family Tree. We put the copies into the Private People list in Family Tree, and you can see them when you display your information in Family Tree.
Related articles
How does Family Tree protect the privacy of living people?
How do I see my contributions to Family Tree?
Why do I not see a person on my Private Persons list in Family Tree anymore?
How do I remove a living or confidential person from my Private People list in Family Tree?