The lead here seems to be GrapheneOS. I haven't looked into this deeply enough either but as I understand it you buy a stock Pixel 6 or 7 and then install.
Discussion
I just so happen to have a Pixel 6 that used to be my phone. Perhaps I should look into it.
Need any support and assistance, just let me know...

I’ll take ya up on that!
I flashed Calyx, but now seems the cool kids are back to Graphene. Can I follow the steps to flash graphene on stock Android to flash over Calyx?
