>>10309653#1 would be the Tamagotchi Mini. Press the A button to feed it, clean poop, and turn off the lights. No games, discipline, etc. It can only get sick and die early if you fuck up really bad.
#2 would be all the Tamagotchi Nano models. Basically the Mini but they have games and special animations. And there's a wide variety, from the original Tamagotchi Nano to the dozens of licensed models.