Camry :: Low Rattle / Knocking Noise Coming From Rear When Hitting Bumps

I would describe the noise as a low rattle/knocking when i hit bumps(or the second after). i thought it might be my spare tire knocking around in its trunk well under the carpet. I actually removed it and drove around to check, but it was not the issue. I had a mechanic look at wheels/suspension because of this noise, he told me the rear passenger side sway bar link needed to be replaced. I personally ended up doing the work and replaced the right and left rear sway bar links however the noise persists.

while the rear was jacked up i tried wobbling the wheels with my hands to check for play but found nothing in any direction. The mechanic seemed to think everything else looked ok.

I only notice it at low speeds like driving around a neighborhood. The big bumps it either isnt happening or the noise is drowned out by the general sound of hitting larger bumps. But over mildly bump sections such as a bad asphalt patch chop it can be very noticeable.

Its not very consistent, its hard to predict when ill hear it and its almost like its during when my suspension settles after hitting the bump that its heard.