The JW teaching on the "other sheep" as earthly subjects is contingent on the separation of the wheat and weeds (the so called real annointed Christians aka the annointed JWs) and them being appointed to rule over ALL Christ's belongings. In this new understanding, consistant with scripture no such authority is given until they are "glorified" after proven faithful during their life course. However, this new understanding disqualifies them from ruling as kings now, by their own understanding of rewards. .
..1 Corinthians 4: 6 Now these things, brethren, I have figuratively applied to myself and Apollos for your sakes, so that in us you may learn not to exceed what is written, so that no one of you will become arrogant in behalf of one against the other. 7 For who regards you as superior? What do you have that you did not receive? And if you did receive it, why do you boast as if you had not received it? 8 You are already filled, you have already become rich, you have become kings without us; and indeed, I wish that you had become kings so that we also might reign with you. 9 For, I think, God has exhibited us apostles last of all, as men condemned to death; because we have become a spectacle to the world, both to angels and to men.