Your post is an exercise in subliminal message decypherment.
@Steve Owen was so gentle with you, he addressed your question, but you try to invert his kindness into an opportunity to spread strange and foreign doctrine. As your posts progressed, your questions seem less sincere as seeking a Godly answer, but rather an opportunity to attack the Truth of scripture. The time has arrived to decypher your message, Giuliano.
Giuliano, you narrowed your focus down to "Some people were chosen from the foundation and others weren't?" in your post #1410. Since you repeat yourself in your post #1401 and your post #1405 and your post #1410, this exposes your assertion embedded inside of your question. I now write that your posts convey that you assert that people can be saved despite the person's name not being written from the foundation of the world in the book of life of the Lamb who has been slain.
After all, you did posit "Could God choose them later?" in your post #1401, but based on the conveyance of your posts, that posit was really a statement of your unbelief in God's sovereignty in the salvation of man.
Giuliano, have you read the Apostle John's writing of "All who dwell on the earth will worship him, [everyone] whose name has not been written from the foundation of the world in the book of life of the Lamb who has been slain" (Revelation 13:8)?
Do not neglect the Apostle John writing of the holy city new Jerusalem (Revelation 21:2), "nothing unclean, and no one who practices abomination and lying, shall ever come into it, but only those whose names are written in the Lamb's book of life" (Revelation 21:27).
Praise the Lord Jesus Who reveals Truth exposing people's darkness who write or speak against God's essence which includes God's sovereign dominion in the salvation of people!
Praise the Lord Jesus Who reveals Truth illuminating the world and Kingdom of God with the true Light!
THERE IS NO LEVEL THAT A PERSON CAN CHOOSE LORD JESUS BECAUSE HE SAID "YOU DID NOT CHOOSE ME, BUT I CHOSE YOU" (JOHN 15:16) - JESUS, BEING GOD, DID NOT PROVIDE ANY EXCEPTION FOR CHOOSING TOWARD JESUS. LORD JESUS SPEAKS TO ALL BELIEVERS IN ALL TIME BECAUSE HE ALSO SAID "I DO NOT ASK ON BEHALF OF THESE ALONE, BUT FOR THOSE ALSO WHO BELIEVE IN ME THROUGH THEIR WORD" (JOHN 17:20)! ALL THESE WORDS OF JESUS ARE AT THE SAME SUPPER! ALL GLORY IS GOD'S! WITH MAN, SALVATION IS IMPOSSIBLE (MATTHEW 19:25-26)! ALL GLORY IN THE SALVATION OF MAN IS GOD'S (JOHN 15:5, ISAIAH 42:8)!
God saves people by God's grace for God's glory! Praise the Lord Jesus!