Clunk in Camry rear

Hello. My first post here but this looks to be the right place (I hope). I have a 98 Camry (4 cyl). I've had a worsening clunk in the rear of the vehicle for a long time. Recently, I've had struts, mounts, sway/connectors (my mechanic had a better word for that), tires and all replaced. Performs nice but still clunks - kinda metallic clunk sound. Can't figure out exactly where it's coming from. Even tried some custom rubber bushings for the mounts - no dice. There are four Camrys amonst myself and some family (various years) and they all exhibit some degree of the same clunking symptoms... what puzzles me that is doesn't appear so common in the forums or elsewhere online. Still, I was wondering if there are any words of wisdom regarding this issue. I appreciate any and all input. Thanks.