Why search outside of scripture when John and Jesus tell us that Jesus is the light ?
There are several different levels of meaning in many passages of the Bible. Both your interpretation, which I agree with btw, and mine are probably true.
In the first sentence of Genesis 1 where it says In the beginning (at first) created God the heavens and the Earth, created is the word bara. Bara and Bar meaning son have the same roots. The first sentence literally is, "At first, God sired the whole universe." Bara has the sense of God the father and the son in the same word. Then later when it talks about the Spirit of God, using ruach from the root for breathe. Thus in the first few sentences we have the whole Trinity described and a general idea of its role in Creation.
Then right after that we have the "let there be light" passage. But since Jesus the Son was already present before the beginning, this was not the creation of Jesus but a description of how an omnipotent God in three persons effected the start and continuation of everything we now see (including the process of evolution which allows life to adapt to a changing universe).
Jesus is part of creation as the light of the world, but He is more than that as well. Like I said, the Bible is written on more than one level at the same time. Hebrew is a holy language that contains more insights than we can imagine.