The 'im" suffix in Hebrew is the plural signification. One cherub, several cherubim. One Eloha, several Elohim.I might say that God's angels were involved in creation. Many Jewish scholars believed that the "US" in "Let US make man in OUR image" refers to angels.(and God Himself)
I'm much more the mind that the early Jews were polytheistic originally, and later henotheistic, evolving into a strict monotheism much later in their history. I think trying to make the plural of God, Elohim about "angels", is a stretch.
I've also heard people claim the plural "let us" is the "majestic plural", such as a king might proclaim "We pronounce...", when it only himself speaking. Not so sure about that either. I lean more towards modern scholarship and the Documentary Hypothesis where you have different schools of thought represented in the texts.
That angel of the Lord in the Garden of Eden, would be a theophany. I think it's foolish to think that was Jesus before he was born as an angel of God. That was God itself, in manifest form. "God walked".This LORD God whom Adam and Eve tried to hide themselves from, was most likely the angel of the LORD who is referred to as LORD God. And the same LORD God who appeared to Abraham and ate with him. And the same LORD God who wrestled with Jacob.....and any where else that the LORD God actually appeared to men. Because no man can see or has seen the one true God.
God is Spirit and has no legs. But God appeared in a form to Adam and Eve, and took on human flesh when he was born to Mary, according to the texts.