One's like one but not like the other
This sounds like it refers to chocobos. EVen though they are all the same model they are all different colours.
A protein shake that breaks the mold
I have no idea what this could refer to. This is what made me think of Hero Drink
Rainbow history all from the mother
Again this reminds me of the different types of Chocobos
Round and round and round the gold
The Chocobo Races in the Gold Saucer?

My guess is simply chocobos or chocobo square?