If I were to compare the current parental controls to the UK rating system, I would expect the following:
Younger Kid: U
Older Kid: + PG
Younger Teen: +12 and 12A
Older Teen: 15
So at the moment, there is no distinction between a younger and older teen; in my opinion, there should be as a Teen in the UK who is 15 should be able to watch 15 rated movies (with parental permission obviously).
Looking at the table in this link, you can see why I am suggesting a split of teens into younger and older. I note that the US really has only one rating system for teens, PG-13, although there is R for 17-year-olds (still a teen!) and above yet the UK has 12/12A and 15 catering for the teenage years…
I wasn’t a Plex Pass user when I created this thread. Sadly it never got a reply before I purchased the Pass, especially as its probably the only reason why I have made that purchase.