My answer might be controversial.
Answer
The LORD gives His glory to Lord Jesus (He had shared this glory with the Father before the world existed) and Jesus gives the same glory to His true believers, who will receive it in the future for the first time.
Explanation
“There are also celestial bodies, and bodies terrestrial: but the
glory (doxa) of the celestial is one, and the glory (doxa) of the terrestrial is another. There is one glory (doxa) of the
sun, and another glory (glory) of the moon, and another
glory (doxa) of the stars; for one star differeth from another star in glory (doxa)” (1 Cor 15:40).
What is man’s glory?
Man is of the same “kind” (genus) of God. This is what the Scripture says about man.
“And God created the man in His own image; in the image of God He
created him. He created them male and female” (Gen 1:27).
Sequence of Information and IT
Information Technology says that meaningful information comes from a particular sequence of alphabets and words. This is true in the case of DNA language or computer programming language.
There is a similar sequence of information in Scripture language we see in Genesis first chapter. Let us see that:
Gen 1:21: “And God created the great sea animals, and all that creeps,
having a living soul, which swarmed the waters, according to its
kind (“genus” in Septuagint); and every bird with wing according
to its kind (genus)”.
Gen 1:24: “And God said, Let the earth bring forth the soul of life
according to its kind (genus): cattle, and creepers, and its beasts of the earth, according to its kind (genus)”.
Gen 1:25: “And God made the beasts of the earth according to its
kind (genus), and cattle according to its kind (genus), and all
creepers of the ground according to its kind (genus)”.
Gen 1: 26: “And God said, let Us make man in Our image, according to
Our likeness”.
It is the sequence that verse 26 follows immediately after verse 25.
In effect verse 26 says:
‘And God said, let Us make man according to Our own kind (genus)’.
In other words, God created man according to the God kind!
So man is of the same genus or species as God is of! The only difference is that God is in the spiritual (“incorruptible”) realm but man is in the physical (“corruptible”) realm.
This explains why the great God Himself took all the pain to incarnate and pay the penalty for man’s sin.
This also explains how it was possible for God to incarnate as Man because God and man are of the same kind.
Exact Image
This is why the Scripture says that the Son is an “exact imprint” (ESV), “exact likeness” (GNB, ISV), “express image” (KJV) of God the Father (Heb 1:3). He is the “image of God” (2 Cor 4:4). He is the “image of the invisible God” (Col 1:15).
Jesus boldly said:
“The one seeing Me has seen the Father” (John 14:9).
This is why I always say that a Son cannot be any different from His Father in nature. If the Father is God, then His monogenes Son is God. A true Father cannot have a Son of different kind. Never.
Man’s Destiny is to become God
(Or man’s destiny is to be transformed into the spiritual realm – 1 Cor 15:51-52)
So, we have seen that Jesus Christ is of the exact same nature of God the Father.
Then what about man?
Apostle John says inspired by the Holy Spirit:
“My dear friends, we are already God's children, though what we will
be hasn't yet been seen. But we do know that when Christ returns, we
will be like him, because we will see him as he truly is” (1 John
3:2).
So, the conclusion is that Jesus looks exactly like God the Father. The saints in resurrection will look exactly like Jesus Christ. Therefore, it becomes clear that the saints will look exactly like God the Father. This is what the Scripture says.
Apostle Paul says:
“Each of you is now a new person. You are becoming more and more
like your Creator, and you will understand him better” (Col 3:10;
CEV).
“and we all, with unveiled face, beholding the glory of the LORD in a
mirror, are being transformed into THE SAME IMAGE, from glory to
glory, even as by the Spirit of the LORD” (2 Cor 3:18; LSV).
This will happen at the future resurrection:
“Behold, I speak a mystery to you: we shall not all fall asleep, but
we shall all be changed. In a moment, in a glance of an eye, at
the last trumpet; for a trumpet will sound, and the dead will be
raised incorruptible, and we shall all be changed” (1 Cor
15:51-52).
“Lord Jesus Christ, who will transform our body of humiliation,
for it to be conformed to His body of glory” (Phlp 3:20-21).
“Your real life is Christ and when he appears, then you too will
appear with him and share his glory!” (Col 3:4; GNB).
Patriarchs knew this:
The surprising fact is that the Old Testament saints knew this!
Job says:
“If a man die, shall he live again? all the days of my appointed time
will I wait, till my change come.” (Job 14:14).
King David says:
“As for me, I shall behold Thy face in righteousness; I shall be
satisfied, when I awake, with Thy likeness” (Psalms 17:15).
No wonder, citing Psalms 82:6, Jesus Christ said:
“Jesus answered them, Has it not been written in your Law, "I said,
you are gods"? If He called those gods with whom the Word of God was,
and the Scripture cannot be broken” (John 10:34).
Conclusion
God became Man so that man can become God.
Yahweh God gives His glory to no other “kind” (genus). Jesus Christ already shared the same glory with His Father. Jesus gives the same glory to His saints because they are all ONE KIND; the God kind!
Now to answer your questions:
The glory that Jesus gives to the Twelve and to the future believers is the same glory He shared with His Father.
The words “no other” in Isaiah means “no other kind”.
The glory Jesus refers to is the same glory of God the Father and Jesus Christ.
Jesus received His glory back at His Resurrection. So the Twelve and the saints will receive the same glory at the first resurrection.
So, there is no contradiction.