Proper breeders don't have a number of bitches pregnant / lactating at the same time, they also only breed one breed of dog.
Anyone breeding labradoodles (with the exceptino of dogs bred to be guide dogs or the occasional accident) or other crosses isn't a proper breeder, they may not be a puppy farm but they are the first step towards it.
Breeders can put you in touch with other breeders including breeders of other breeds.
Breeders know who the father of the puppies is.
Breeders are KC registered, not just with the council.
Your puppy will be registered and the registration wil be passed to you so you become the registered owner.
You will get a pedigree certificate, this will be from teh KC not a hand written one.
Good breeders do not need to advertise.
My limited knowledge comes mainly from a friend of my brother's, his mum bread Irish Setters, the dogs had their own settee in the living room, if you sat on it the dogs would too and the eldest would start to push you off.
The other dogs in the home were pets as well as in 2 cases show dogs. One of the dogs was just a pet, he wasn't going to make it as a show dog.
When we, as a family were looking for a dog she put us in touch with the owner of a stud dog of the breed we were looking at, who then passed on details of where he had been with available puppies.
Before we were told where the puppies where qustions were asked about our home, whether there were children, other pets, would someone be home.
If someone is genuine about breeding they will 'vet' the home the puppy is going to.