hog55 The UI is basically unchanged from the standard AOSP project.
BTW, to reflash to stock OS, simply get the stock OS image from https://developers.google.com/android/images and use adb to unlock the bootloader and reflash
Then simply relock the bootloader, similar process to GrapheneOS.
If you flash to GrapheneOS, forgot your pincode, and cannot access the debug setting for OEM unlocking (assuming you disabled it, which you don't need to), then you simply can enter recovery mode and do a factory reset to re-access your device (also useful if you forget your pincode in general). All data will be deleted of course