Beautiful Boy in SE Michigan

Greetings Fellow Feline Lovers, I come here somewhat reluctantly, but hopeful, as I believe this community is the best place to seek a forever loving home with someone who is like me (read: cat obsessed) for a beautiful boy I saved from the freezing cold of Detroit a week ago. As fate would have it, I happened to be outside at 5 AM last Monday when a clearly lost, scared, and shivering young male bounded up to me down a dimly lit street seeking warmth and salvation with no hesitancy to come into my arms. As the morning waned on, after feeding him and getting him comfortable, I quickly realized he was no mere stray. This cat came from a home somewhere - he is immaculate in almost every dimension. He is clean, friendly, eats perfectly, uses a litterbox with no issues. His health is unafflicted in any visible degree - eyes, ears, nose, teeth, paws, weight - you name it, he is perfect. Someone loved this animal, and so, I set out to reunite him. I immediately posted everywhere online - Pawboost, Nextdoor, Facebook. These posts have been shared and reposted on local communities as well. Additionally, I posted fliers the old school way on every street in my neighborhood. I have visited every vet office close to me with the same. I have reached out to the best non-profit, foster only organization in the metro with no reply. He has no microchip, collar, and no missing reports with the city I'm in. With this much visibility, I was confident whomever was missing him would have found him instantly, if not immediately after these broadcasts, certainly by day 2 or 3. One week has now passed and no one has come forward. I am completely baffled and angry by this, as a cat this beautiful and perfect should have been claimed (as I mentioned, clearly well taken care of). Alas, I now beli