Devices that don't depend on 3rd parties to unlock bootloader?
Are there any devices that, by default/by design, allow the user to unlock the bootloader totally offline, no ransom, validation, account, internet or whatever required?
Pixel is probably the best option, but it will still require online verification of the phone qualifies for being unlocked. (OEM lock greyed out in dev settings) After that it's easy
User over_clox commented here in the post that apparently a device known as Blu B131DL allows for the bootloader to be unlocked independently, so I'll keep an eye for that.
Just FYI, this seems to depend on where you get the Pixel from - if bought directly from Google, it should be offline-unlockable out of the box. The carrier-sold Pixels are a different story because the carriers demanded it.
Of course check this is true for the specific model you're buying before you actually buy it, but for me the unlock was never greyed out on my 7a.
Got my pixel direct, the unlock for me was greyed until I connected to WiFi. Other than that, I didn't have to sign into anything and immediately put graphine on it.