Which of the following is not a breed of buffalo?

Cornish is not a breed of buffalo.
India has been blessed with a large repository of indigenous bovine populations with rich bio-diversity. There are 50 well-defined breeds of cattle and 17 breeds of buffaloes.
The Murrah buffalo is a breed of water buffalo mainly kept for milk production. It originates in Haryana and Punjab India.
Jafarabadi buffalo, Jaffrabadi buffalo or Gir buffalo is a riverine buffalo that originated in Gujarat, India.
The Nagpuri is a breed of water buffalo originating in Maharashtra, India. It stands better amongst the breeds of buffaloes that combine the milk and drought qualities in a better proportion in adverse climatic conditions.