To answer the question that was posed.
Yes there are still pressure setting regions.
Sometimes the value is called the Regional Pressure Setting and sometimes it is called the Regional QNH.
Very often the RT phraseology is expressed differently to other references for the same thing in order to reduce RT clutter. For example, when requesting the Regional in the air "... Request Chatham QNH ..." is shorter than "... Request Chatham regional pressure setting ..." and hence reduces RT transmission time!
It's as simple as that.
