help id heirloom tomato variety
I need some help identifying my heirloom tomato variety. The tag only says "Heirloom Tomato" and the picture has a bunch of different tomatoes on it. I thought it might be a Cherokee Green because I read somewhere that the inside kind of liquifies when it is overripe. I noticed a couple of days ago some of the fruit the skin started to get really wrinkly (you can kind of tell in the picture) and it was soft feeling. (This is also why I picked some). But I do not think it is Cherokee Green because there isn't any yellow on it.
I've been waiting all summer for these and I really would like to know what kind they are so I can better maintain them.
Thanks in advance, it is much appreciated any sort of direction of idea as to what they are!