There are hundreds of dog breeds around the world that are not recognized by the AKC. That doesn’t mean that the AKC is in denial that such dog breeds exist. It means that there is not enough of that dog breed in the United States to meet the minimum requirements for recognition.
Dog breeds may enter the Miscellaneous Class after first being recorded in the Foundation Stock Service (FSS). To qualify for the Miscellaneous Class, the dog breed must have a national dog club for that breed with around 100 active members. There should also be about 150 dogs of the breed registered in the FSS. There are other procedural requirements outlined in the AKC’s Foundation Stock Service Program.