I'm guessing the answer is mostly no, since GrapheneOS was the most Pixel-friendly AOSP project I knew of, and they're also "buy a new phone, n00b" https://grapheneos.org/faq#legacy-devices

https://doc.e.foundation/devices and https://wiki.lineageos.org/devices/#google both list quite a few of them, but unknown if it's that they are currently available but once the blobs get locked it'll be the same story: unsupported

And, of course, going with "community" distros also nuke Play services and thus almost certainly will not allow Google Pay or other niceties