A list of all of my Tamagotchi and their generations:
My white with flames v1 (active): 99th Generation (technically 102nd Generation but the counter doesn't go up that high). It is a Mametchi.
My green with flowers v3 (inactive): 9th Generation. It was a Yangu Mametchi before I removed the battery.
My blue with waves v3 (broken, definitely beyond repair): 1st Generation. It was in the Teletchi stage when my friend and I... um... took out our... um... frustration on it.
My blue with diamonds v4 (active): 6th Generation. It is a Memetchi with a job as a doctor.
My yellow pet v5 (active): 2nd Generation. I have the Mame family, so the parents are Mamametchi and Papamametchi and the children are Mametchi and Chamametchi.