Job 38:4 Where wast thou when I laid the foundations of the earth? declare, if thou hast understanding. 5 Who hath laid the measures thereof, if thou knowest? or who hath stretched the line upon it? 6 Whereupon are the foundations thereof fastened? or who laid the corner stone thereof; 7 When the
morning stars sang together, and all
the sons of God shouted for joy?
The passage suggests two separate and distinct classes of entities which were present at creation. The morning stars (plural) and the sons of God (plural).
One entity who specifically has the morning star attributes is Lucifer....
Isa 14:12 "How you have fallen from heaven, O star of the morning, son of the dawn! You have been cut down to the earth, You who have weakened the nations!
Of course there's more than one morning star as indicated by the passage "the morning stars sang together" (plural). But this is a thread about Lucifer, not each morning star identified in the bible so I'll not say anymore about that at this time.