I made a Tamagotchi Pix Growth Chart! based on the information I could find on Tamagotchi Wiki. This isn't a complete growth chart, we don't know all of the adult characters yet,
Tamagotchi Friends | Tamagotchi Wiki | Fandom
Tama-Palace - Tamagotchi Blog & Fansite
tamagotchi characters v1 - Szukaj w Google | Pixel art, Growth chart, Cross stitch patterns