Some good Tama Girl names would be
Resa
Lexi
Kira
Nika
Kandi
Liz
Kitty
Anjou
Lola
Cheri
Peach
Miku
Star
Esha
Misty
Some good Tama Boy names would be
Joey
Nigel
Kai
Yoshi
Andre (pronounced AHN-dre)
Tako (I dunno!)
Bean
Qu (pronounced like the letter Q)
Jack
Mo
Stu
Mac
Tommy
Some of them are pretty weird but how I select names is how versatile they would be. You don't know what the heck your Tamagotchi will evolve into, so you want to pick a name that will fit the most Tamagotchis. For instance, if you get a Mametchi and you have named your Tamagotchi Bean, then maybe you wouldn't see your Tamagotchi as a Bean, you know what I mean? So pick one that you think is cute, and one that is versatile.
I try to mostly pick not human names because if you pick a weird name that you wouldn't name your son, (like if I had a son I certainly wouldn't name it Bean or... TAKO!) it would be that much cuter for a Tamagotchi.