This could be difficult to answer...haha
In the boarding kennel the dogs I find that are not vocal are: Newfoundland dogs-I get a lot of Newf's in for boarding and never have had a barking problem...if I only have Newf's in the kennel is as quite as a church. I find many show dogs are very quite, I have a few Goldens that come in from show homes that don't make a peep and Goldens from pet homes that would drive you insane with their barking. Some indivudual dogs are very quite, I have a few Pyr's that come in that are very quite, Cocker Spaniels that don't make any noise, Bulldogs that are quite...sometimes it depends greatly on the dogs upbringing..and in a kennel environment even some of the most quite dogs at home can be barking maniacs at the kennel...almost as if its party time when they walk in the door.
The breeds I find very vocal are: German Shepherds, American Eskimo dogs (why they keep this breed around I'll never know...sorry to offend anyone
), most Terriers are barky, Husky's...oh my are they noisy, Basset Hounds, Lab's are by far the worst...all northern breeds can be noisy.
All of my dogs are very quite and bark only when it's neccessary. I never trained them to be quite, they just are. It's wonderful, they must see the the possibility of my going insane if they drive me to it...haha