Sons of God are also mentioned in Job
These creatures are not men, not human beings.
These are the same ones Genesis 6 speaks of.
Satan appears to be of the same order of being as themselves.
Peter also refers to 'celestial beings'. in other words angels.
Angels also appear to be of a large amount of variety in kind, some are called 'watchers', but they all are 'celestial', until they leave their appointed by God places, purposes and functions, habitations, against His will.
Job 1
Satan Attacks Job’s Character
6 Now there was a day when the sons of God came to present themselves before the Lord, and [
e]Satan also came among them. 7 And the Lord said to [
f]Satan, “From where do you come?”
So Satan answered the Lord and said, “From going to and fro on the earth, and from walking back and forth on it.”
8 Then the Lord said to Satan, “Have you [
g]considered My servant Job, that
there is none like him on the earth, a blameless and upright man, one who fears God and [
h]shuns evil?”
9 So Satan answered the Lord and said, “Does Job fear God for nothing? 10 Have You not [
i]made a hedge around him, around his household, and around all that he has on every side? You have blessed the work of his hands, and his possessions have increased in the land. 11 But now, stretch out Your hand and touch all that he has, and he will surely curse[
j] You to Your face!”
12 And the Lord said to Satan, “Behold, all that he has
is in your [
k]power; only do not lay a hand on his
person.”
So Satan went out from the presence of the Lord.