I say all men, and angels, and the heavenly beings, etc are God’s creation. Only men called of God are his CHILDREN.
I must trot out some Scripture that indicates some difference to this theological point, then.
Jesus is the Son of God (also Son of Man) - no verses required, I trust.
Genesis 6:1-4 The giants are called sons of God and sons of Heaven.
Job 1:6 Angels are called sons of God.
Psalms 82:6 Anyone to whom the word of God is addressed.
2 Samuel 7:14 King David
Exodus 4:22 All of Israel
Hosea 11:10 All of Israel
Matthew 5:9 The peacemakers
But it all comes down to this: whoseover believes in God will have eternal life with Him in Heaven. These are His Children - those that answer that call and believe.