It can really depend on the parent duck and drakes and how they have been raised... we have 3 Swedish Blue ducks, 2 call ducks, a pekin and a Buff Orpington drake. The quietest and noisiest of the ducks are the 2 calls that we got when they were about a year old.
2nd loudest is one of the Swedish, she is also proving to be the worst for nesting/being broody but not looking after the ducklings once they hatch.
3rd loudest is the pekin, who also nests and is very protective of her eggs (and potentially steals eggs to nest on) then the other 2 Swedish.
The Buff drake is extremely laid back, quiet, and other than chasing one of the Swedish a bit too often I would have a bunch of them! They are such a lovely sensitive breed. If you don't particularly want duck eggs I would actually consider whether you can separate the ducks and chickens and maybe get a bonded pair of drakes.