Just my own experience, but I got rid of a lot of noise like that when I changed my clutch around a year ago. The main culprit seemed to be the dual mass flywheel. I had thought the release bearing and the bronze bush where the gearbox shaft goes into the back of the crankshaft were the most likely suspects, but both appeared to be as good as new, even after 100,000 miles. The dual mass flywheel however had become very loose and rattly, The new one was much tighter. I'm glad I got a new one.
Did you get a new DMF at the same time as the clutch? The fact that there's a mechanical clatter as well as groans and moans suggests it's getting a bit loose.