There's no way to view this in-game and it's unlikely to be added back in again. Information is definitely outdated and you shouldn't really take it to heart.
People Relations Advisors (or PRA) were Supervisors in Stepford County Railway. The manager/director in charge of this rank was the Community Director. Currently this is the only vacant supervisor role.
Before the role became vacant, there were 2 PRAs in Stepford County Railway.
- As of October 26, 2019, the Directors made the decision to rename the original Mobile Operations Supervisor to People Relations Advisor, thus ending the MOS role. However, on May 17th, 2020, MOS was reinstated, and essentially became what People Relations Advisor was for a few months. People Relations Advisors then strictly stuck to relations, and did not have the ability to go to any training.
- As of November 18, 2019, the Directors decided that the Community Director (back then Relations Director) would be the manager for PRAs and that Head of People Relations would be renamed to its original name, Head of Operational Standards.