I've had very similar cory hang out with each other but if they are not very closely colored in my experience they won't. For example I had bronze and peppered that hung out but a panda that was excluded. Even so, they just hung out, it wasn't the same behavior as being with its own kind. Cory are very social and even play, in this case they didn't, they just kind of stayed with each other for protection but not really socializing.