LG have made some nice improvements to allowing bootloader unlocking on some of their models. It's still definitely well beyond what "normal people" would be able to do, but it's nice to see from a technical standpoint. At least one model from each of the LG V10/V20/V30 and G4/G5/G6 are able to be unlocked in an official way.

http://developer.lge.com/resource/mobile/RetrieveBootloader....