I have 3 from the same family. They are all sturdy, muscular and heavy. I’ve had others from this family and they are the same. I have another cat that I took in from my best friend when she moved (others backed out at the last minute) and she is thin, light and flexible. I don’t know what kind she is but she is blue/grey.
I only have 3 cats total. I’m starting to feel like a piker.