You are asking about a dog breed that is larger than a golden retriever and has white hair all over. There are many white dog breeds, such as white Labrador Retriever, white Old English Sheepdog, white Poodle (Bichon Frise), etc.
Some breeds are bigger than the golden retriever but are black and white Colored coats, such as black and white shepherd dogs, these dogs are also very cute. But what you need to know is that some dog breeds are naturally large. So the size of a dog cannot be judged by color alone. Each dog breed has its own unique physical characteristics and personality traits. It is recommended that you observe the characteristics of different dog breeds and choose a suitable breed.