Jean Perry wrote: . . .
does that make sense? or does this only make sense in my reality?
Yes, it does make sense. It depends on what you have in that List, and surely the People class would be better named Person.
It is very strange that a Person would have a List of phone numbers, however, unless they are his own phone numbers. I think you have some iffy design there, which ought to be chnaged.
There is another problem in your loop. You are obtaining something and doing nothing with it, so the reference to whatever you get simply disappears into cyber‑limbo never to be seen again.