The good news is that they are actively working on developing their own hardware. The bad news is that it’s been delayed. But I’m watching closely.
https://www.galaxus.at/en/page/grapheneos-postpones-pixel-al...
Google would not allow this and they're way too entangled with Samsung.
That limitation might be doing you a favor, as these things go...
Even if Pixels hadn't PWM a larger screen (or, dare I say, a book) will be an improvement for longer reading sessions.
In the meantime, I use a Motorola G Power 2024 which has IPS. I'm very much a non-expert but made a minor hobby out of trying to de-google it as much as possible.
Never signed into Google with it. Using NetGuard with a whitelist to prevent most of the phoning home. Uninstalled or disabled most built-in apps. The apps I use are installed via either Obtanium or Fdroid. Have Dropbox from Aurora. Use Motorola's private space for keeping some data and apps in a separate, supposedly secure locker.
I'm sure this doesn't come close to GrapheneOS's security level but it's the best I can do within the limitations of this device. It was a fun mini-project. NetGuard is invaluable for this purpose. Almost feels like the phone is truly mine.
The problem with nearly every other phone, except maybe Samsung flagships, is that they don't fulfill the security requirements. And Samsung is hostile against unlocking (even when it was still possible, it would burn a Knox eFuse).