Does this Passage tell us who, specifically, is not saved?

Catholic Fundamentalism believes that many of the European peoples are descended from the 10 Northern Tribes.  They were exiled in 720 B.C. and deported North by Assyrians.  From there, many migrated into Europe, remaining some tribal identities as they traveled and settled and expanded their areas.  In a few hundred years, descendants  had taken over most of Europe, as their descendants would begin taking over the Americas 900 years later.
The Tribes of Gad and Simon ended up in England.  Their names appear 0n ancient maps.  After Protestants took over many of the academic pursuits, like cartography,  Gad’s name disappears from many maps of the Celtic Tribes.    Simon’s is rarely mentioned, except as a “coincidence”.  Similarly, the connection of Dan with Denmark is hidden.  So is the relationship of “Isaac”, forerunner of Saka, who became Saxons, has been dropped down the memory hole.   The remaining Seven Tribes are absorbed through out Europe.  Many of the European peoples came from the Ten Northern Tribes.
This reading may tell us who is, and who is not, saved:
Is 49:1-6
“Hear me, O islands,
listen, O distant peoples.
The LORD called me from birth,
from my mother’s womb he gave me my name.
He made of me a sharp-edged sword
and concealed me in the shadow of his arm.
He made me a polished arrow,
in his quiver he hid me.
You are my servant, He said to me,
Israel, through whom I show my glory.”
(“Israel, through whom I show My Glory” is the personification of Jesus, who will come to save the descendants of Israel.  He is described as both “arrow” and “sword”, both weapons, in this case, weapons of God used in a war against errors that compile into greater corruption of human programs.)
Though I thought I had toiled in vain,
and for nothing, uselessly, spent my strength,
Yet my reward is with the LORD,
my recompense is with my God.
For now the LORD has spoken
who formed me as his servant from the womb,
That Jacob may be brought back to him
and Israel gathered to him;
And I am made glorious in the sight of the LORD,
and my God is now my strength!
It is too little, he says, for you to be my servant,
to raise up the tribes of Jacob,
and restore the survivors of Israel;
I will make you a light to the nations,
that my salvation may reach to the ends of the earth.”
(This passage makes it clear that only the genetic and spiritual sons of Jacob/Israel may be saved.  It is clear that Christ’s concern is greater than gathering up and restoring the Twelve Tribes.  All who wish to be saved may be, the light shows the way “to the nations, His salvation reaches the ends of the earth.”)
Who is not mentioned?   Abraham’s son, Jacob’s brother, and Isaac’s uncle, Ishmael, is not mentioned.  Neither are his genetic or spiritual descendants identified as among those receiving light and salvation.
Is there as great a division between Isaac and Ishmael as between Abel and Cain?

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