I'm specifically curious because we have a cat who I love dearly and I wasn't sure if places that aren't reputable cause temperament problems or health issues. I just want a nice easy going puppy that can be a cat's companion, odd as that sounds.
Okay... I'm not touching the English Creme as everyone else has that handled, but be aware that dogs and cats are not always bff's, especially if the cat hasn't been raised with dogs.
If you are planning to bring a companion home for your cat, I suggest another cat. We are cat people in addition to dog people, and it's a fact of life that the cat's unique temperament as well as the first few months of his life does affect how he sees dogs and other animals. Some cats can be absolutely happy being the only animal in your life, especially as they can be fairly territorial.
Our cat was probably born in a home with dogs and spent his first 3 months there before his previous owners abandoned him at the barn I board at. I would not have brought him home had I not already seen he was very good with dogs.
Any other cats on our property or in our home drives him to start spraying inside and outside the house - this despite him being neutered very early.
Our previous cat barely tolerated dogs, as he was a teenager when we brought our first dog home. He kept those dogs in line with an iron claw and much growling.
My oldest sister's cat is the same way to a lesser extent. He was probably in a good home before he went stray and was rescued. He likes other cats, but dogs not so much.
My baby sister's new cat - is fearful of other cats and dogs as she (apartment cat that had been abandoned in the parking lot when the previous owners left) had never been positively exposed to either. She's happiest with just people around but will vanish if any other four legged creatures are in sight.
So in a nutshell - do not approach this with the idea of bringing home a companion for your cat.
As well as puppies being easygoing - they are not. They are only easygoing that first week, and then they get moving. All of the breeders mentioned above will be sure to warn you. Remember that goldens are a sporting breed in addition to being a companion breed. This means that until training and old age set in, these dogs are "busy" and active. And rambunctious.
If you owned your cat when he was young and got to see him doing monkey tail zoomies around the house, climbing the curtains, jumping on the furniture, lunging at you to randomly mouth and claw your legs... golden retrievers are a lot like that. But bigger and heavier.