I think that if we are saved, Jesus is changing us to become gentle and humble >
"rather let it be the hidden person of the heart, with the incorruptible beauty of a gentle and quiet spirit, which is very precious in the sight of God." (1 Peter 3:4)
And with this we have in the Sermon on the Mount the basics of how to be >
poor in spirit,
meek,
merciful,
pure in heart.
This is how we become because of God's love in our hearts > Romans 5:5, 1 John 4:17. And we have still more and more how our Heavenly Father keeps correcting our character and maturing us > Hebrews 12:4-14 < this scripture says every child of God has this correction. So, if we are saved, this is basic, guaranteed for every child of God.
"But evil men and impostors will grow worse and worse, deceiving and being deceived." (2 Timothy 3:13)
So, it is not mainly about the quantity, but the quality of how we become spiritually in sharing with our Father. So, we need to give this our main attention, and not be decoyed with issues which take our attention away.
About ones who have not heard the Gospel > the Bible says Satan has the whole world under his sway, and this I think means in his
"spirit who now works in the sons of disobedience" (in Ephesians 2:2). So, I would not be wishful about ones who have not heard the Gospel. Pray for all, and have hope for all, and help someone you can to reach the unreached . . . howsoever God guides us.
But one thing in an unbeliever can be unforgiveness. We know how Jesus has said one needs to forgive, or else the person is not forgiven > Mark 11:25. And I have been informed that ones in back unreached places can have even cultures of unforgiveness.
So, I would not trust in wishful ideas about people you do not personally know.
By the way, also, Jesus says that if ones do not obey God, the one who knows will receive more stripes than the one who does not know > Luke 12:47-48. Why would an unknowing person miss out, though? I think it has to do with the person's nature being of Satan's spirit, even if someone does not realize this. That unforgiveness keeps the person away from God's forgiveness which lives in His generously forgiving love.
So, yes the ones who are growing in being generously all-forgiving are the saved. It is good to be in this number