I get that this was a "when" question, but I'll lean towards the "why" answer if I may.
Why should I (or should I not) create profiles of living persons for families that are not my own? Since the advent of the GDPR regulations as well as WikiTree's policy towards completely unlisting profiles that represent living persons, I would highly recommend "not" creating them unless you intend to manage them until that person dies.
Keep in mind that if this person is a relatively normal person, has no ties to any particular project, and you have created them, that you cannot abandon management of the profile. The system will not let you. If you are fortunate to find someone else who has an interest in that profile, you can pawn it off onto someone else, but it must always be owned or else it will be removed. Unlisted profiles cannot be simply "opened" later unless the person in the profile passes away.
There is a possibility that it may represent someone who is of interest to a project, in which case you can pawn it off onto the project account. However, now it becomes the responsibility of the project to manage and wait until the person passes away before they can release it due to the regulations.
So it creates a profile that no one can see except you, no one can edit but you, and can only be released when they pass away.