Murena is in the business of deGoogling Android smartphones in the name of privacy. The French/European firm has been doing this for around five years, as We recently got our hands on a Fairphone 4 running Murena's tracker-blocking /e/OS. Our curiosity was piqued to see an alternative OS running on alt hardware. Step in for a closer look...
I’m pretty sure graphene os has been doing this for a while now, check them out
GrapheneOS only supports modern pixels though. LineageOS is the one with the largest compatibility with both modern and older devices.