Well. having researched this, it seems there are plenty of opinions, that would takes weeks to unravel. E.g.
Revelation 3:14 (KJV) 14 And unto the angel of the church of the Laodiceans write; These things saith the Amen, the faithful and true witness, the beginning of the creation of God; Most translatio...
hermeneutics.stackexchange.com
Yet I think the answer can be neatly concluded from your Wisdom example at Proverbs 8:22 in the LXX, by sampling the next verse, 23, which shows that although wisdom appears to be "created," he is not in fact created in the sense that the universe was created. In fact the creation of wisdom "is" an orgin statement for the rest of creation, and occurs before time began.
"22 The Lord made me the beginning of his ways for his works."
"23 He established me "before time was" in the beginning, before he made the earth:"
So the "beginning" means, even before time began.
As what does "being made" connote in this context? Being brought forth /possessed / revealed per the Hebrew translations.
So I see nothing to link Christ or wisdom to what is created, because the word "beginning" does not denote the first created thing, but something that exists before the creation. So it is an origin statement, by analogy to wisdom.