Knocking from the rear

[KJZ28]

I had a bit of a rattle on bumps and uneven surfaces. I recently put in new Bilstein shocks, sway bar endlinks, and most recently a UMI adjustable Panhard Rod with spherical/poly combo. So after the Panhard rod the noise got more prevalent. So I put the car back up in the air and saw the ebrake cable was hitting a nut on the bar, so I zip tied it out of the way, but that didnt work. All the bolts are tight on the suspension parts because I torqued them all. I am so confused. I thought maybe the jack was loose...the spare was loose, tightened it up, the jack was in wrong and I put it in right and tight. Still had knock. Its not the diff because its when there is bumps and stuff.

Any input is appreciated.