There used to be time when they applied the "prodigal son" class to the "other sheep" class.
Some of the anointed were not happy to suddenly work together with the lowly esteemed foot soldier.
So the President of the WTBTS let it be known that he was not happy about that and labeled the anointed the “elder son” class, as were slow to get rid of old and incorrect ideas.
The Watchtower 1943, November 15, page 346