Again, 144,000 are 12,000 from each of the 12 tribes of Israel. Or, 12 x 12 = 144. Then, 144 x 1,000. The 1,000 is just a number used by the writers to illustrate a large number of people or time periods. There will be the morning of the first resurrection where the just who kept their testimonies of Jesus Christ. That would not include you because you do not glorify Christ as the Son of God and part of the Godhead. Your testimony waivers. But, the good news is that you will not be cast out to Perdition. For, God has made it possible for nearly all to obtain life in Heaven. But, as First Corinthians chapter 15 explains, their will be different glories in the resurrection base on our testimonies of Christ. Three mansions specifically, Celestial, Terrestrial, Telestial (Stars).
Not sure what you are trying to say about the other sheep? After his death, he told his disciples that he has other sheep, meaning other people on the earth, to go and preach to. And, he came to the America's and showed himself to the people in the America's. This is recorded in The Book of Mormon." For scriptural references: Ezekiel 37:15 - 20; Isaiah 29:4, 10 - 18;
Psalms 85:11; John 10:16