I always find the wording by the society quite curious.
Take the expression "most of the elders are of the other sheep".
Lets do the maths - even after the big increase in "anointed" ones in recent years , they still only number 10,000. Assuming 60% are women (in line with the ratio of female to male JWs) that makes approx 4,000 male anointed JWs. Again assuming the same ratio , less than 1 in every 1000 of elders are anointed. ie 999 are other sheep.
So in reality the use of the word "most" is wrong and would be marked down in any school context. The correct expression would be "virtually all" elders are of the other sheep. Say you had a full time job and turned up for work one day in every 3 years. Would you say that "most of the days I don't go to work?" Would your employer or workmates agree with that description?
I think the reason that the WTBTS uses such an inappropriate expression is that they need to maintain the fiction that although small in number , there is a core of anointed elders to prop up their description of scriptures like the societies interpretation of Revelation.
rechap.21p.136Jehovah’sPlaguesonChristendom While the seven stars in Jesus’ right hand picture the anointed overseers in the Christian congregation, the elders in most of the approximately 100,000 congregations in the world today are of the great crowd. (Revelation 1:16; 7:9) What is their position? Since they receive their appointment by holy spirit through the anointed faithful and discreet slave class, these can be said to be under Jesus’ right hand of control, for they are also his undershepherds. (Isaiah 61:5, 6; Acts 20:28) They support the “seven stars” in that they serve where qualified anointed brothers are not available.