Sundae is my smallest weighing in at 6 lbs
Kitten looks smaller than Sundae, but he is sleek and muscular and weighs 7 lbs.
Roxy is around 11-12 lbs.
Oliver is about 10 lbs.
Raisin is about 11 lbs
And Jimmy is my biggest at 13-14 lbs.

It's been awhile since they've been weighed so I don't remember exactly.