Are the elect created to belong to Christ and is the choosing that God does choosing to
create those specific persons for Christ, for His glory, and as His inheritance? That would certainly change one's perspective from redemption being man centered to being God centered. I have been trying to work through this to see if it is compatible with the things that we do know doctrinally and keep hitting possible snags---and then my mind wanders off to other things less taxing.

I do not want to lean on my own understanding and call it good. And I don't want to singularly arrive at a doctrine and consider it truth.
I am asking for help in working through this, from fellow Reformed, well versed in scripture, theology, and doctrine, of which there are many on this forum.
My disclaimer: I have not read this thread; so if I write something that others have written, please be patient with the repetition.
Brainstorming through various verses
I'll start by just brainstorming. A few verses immediately come to mind. The first speaks of various individuals in building terminology.
As you come to him, a living stone rejected by men but in the sight of God chosen and precious, you yourselves like living stones are being built up as a spiritual house, to be a holy priesthood, to offer spiritual sacrifices acceptable to God through Jesus Christ. (1 Peter 2:4-5 ESV)
The passage continues to use building terminology to describe Jesus, believers, and unbelievers.
But you are a chosen race, a royal priesthood, a holy nation, a people for his own possession, that you may proclaim the excellencies of him who called you out of darkness into his marvelous light. (1 Peter 2:9 ESV)
A connection is made between God's choosing, the establishment of a holy nation, and a people for his own possession (for the purpose of the proclamation of God's glory in redemption).
A friend of mine, a few months ago, shared with me the building terminology in the book of Ephesians. I'll try my best to remember the words he pointed out. (1) In Ephesians 1:4 "to choose" is from a word that connects to brick/stone masons who would carefully
select a stone. (2) In the same verses we have the phrase "foundation of the world." Foundation is another building terminology word. (3) Ephesians 2:10 utilizes the word "workmanship," so we who are made alive are also ones who God has built to function in a certain way. (4) Sadly, my memory is very hazy, and I cannot remember all of them anymore. I'm trying to remember a conversation at the mall several months ago, and a lot has happened since then. However, I'll at least quote the two verses mentioned above.
even as he chose us in him before the foundation of the world, that we should be holy and blameless before him. (1:4 ESV)
For we are his workmanship, created in Christ Jesus for good works, which God prepared beforehand, that we should walk in them. (2:10 ESV)
We also see, in Ephesians 3:7-13, a reference to the creative power of God, His eternal purpose, and His manifold wisdom. In particular, Paul seems to be speaking of the gospel's relationship to the Gentiles. I see this connecting back to the prior mentioned statement in 1:4, where God chose us in Him. This "in Him" refers to Christ as the instrument of redemption or maybe as one in fellowship and planning with God. An oft missed fact is that the "chose" in 1:4 is in the middle, and it makes sense to see this as God choosing for Himself. Also, the opening of verse 4 is translated by the ESV as "even as," and this is definitely a legitimate translation. However, I prefer to take the word in a causal sense, where one would translate it as "because."
This sense of the word would create a very interesting understanding of the relationship between verse 3 and 4. We are given a very significant summary statement speaking of the blessings found in Christ Jesus to us. Immediately following is a causal sense of the word "because," and this would lead us to conclude that Paul is explaining to us the causal foundation of the blessings we have in Christ. These blessings are built upon the past, current, and future working of God (1:4-14). Hence, I would suggest that we can read 3 and 4 in the following way.
Blessed be the God and Father of our Lord Jesus Christ, who has blessed us in Christ with every spiritual blessing in the heavenly places, because he chose us in him before the foundation of the world, that we should be holy and blameless before him.
In 1:6 we see some God-centered motivation mentioned.
to the praise of his glorious grace, with which he has blessed us in the Beloved. (ESV)
Verse 1:13 speaks toward the praise of His glory.
We also have some very interesting comments.
according to the riches of his grace, 8 which he lavished upon us, in all wisdom and insight 9 making known to us the mystery of his will, according to his purpose, which he set forth in Christ 10 as a plan for the fullness of time, to unite all things in him, things in heaven and things on earth. (Ephesians 1:7c-10 ESV)
God's wisdom, insight, purpose, plan are located in Christ for the unifying of all things in Him.
A Few Concluding Thoughts from the Previous Brainstorming
God's choice and redemption of His people is founded upon Himself and Christ in an eternal purpose and plan. As I have argued elsewhere, His choice is not conditioned upon the libertarian faith (the Arminian conditional election position) of people. Rather, God's knowledge is sourced ultimately in Himself (His self-sufficient nature). God chose a people, implemented His redemption of them, in keeping with His insanely amazing wisdom and planning. God's working does not rule out the activity of people; rather, God's working, building, creating, making alive, and fashioning brings about their activities. He gives them faith; therefore, they believe. They are His workmanship; therefore, they do good works. Thusly, God gets the glory. Redemption is God-centered. And the activity of people is not founded upon human ultimacy (as the libertarian/Arminian position assumes); rather the activity of people is founded upon God's grace and wisdom as He causes their lives to change to bring about His redemptive purposes.
Sadly, I've been falsely and stupidly accused of promoting synergism of the Arminian kind. The above words cannot possibly be taken that way. I hold to a compatibilist view, sometimes called concurrence, and I've argued extensively against libertarian freedom, which is a huge foundation of Arminian synergism (i.e. Arminian metaphysics).
In closing, I hope that these thoughts have helped. This has been a long time coming, and I hope that I've answered your questions and given you some food for thought. Please let me know what you think. I would love to see how you have evaluated these words.