I am 6'4" or 190cm and I can fight either in the 185lbs/83klg or 205lbs/93klg classes.
I could even bulk up to HW if I really wanted. Never fought at that weight though.
But my natural weight when Im off cycle is around 195/203. I want someday be like Randy Couture and have 2 weight class belts at the same time..... although he had HW and LHW...and I would be LHW and MW