I regret to see they skipped the Gameboy Advance SP and Gameboy Micro. The former was quite popular because it was the last console that played Gameboy Color games.
My other favorite Nintendo “WTF” is anything to do with the N64 controller, look it up a teardown if you’re bored
I seem to remember you could get the picture to fill up the screen. I wouldn't be surprised if this introduced some artifacts though.
The SP was better, but only somewhat: it had a button for front-lit lighting so the image quality was still pretty mediocre. I presume to save battery life, since a back-lit would have lead to much more light loss.
I've got one, but sadly the LCD has a bunch of dead lines. Apparently, that can be repaired pretty easily.
https://en.wikipedia.org/wiki/Game_Boy_family#Game_Boy_Light