What dog breed has won the most best in show at westminster

TOTALBREED(S)VARIETIE(S)15Wire Fox Terrier-8Scottish Terrier-6English Springer Spaniel-5Poodle (Standard)
Pekignese-4Airedale Terrier
Boxer
Doberman Pinscher
Poodle (Miniature)Smooth Fox Terrier
Sealyham Terrier3German Shorthaired Pointer
Pointer-2Afghan Hound
Beagle (15 Inch)
Bichon Frise
Bulldog
Cocker Spaniel (Black)
German Shepherd Dog
Lakeland Terrier
NewfoundlandNorwich Terrier
Old English Sheepdog
Poodle (Toy)
West Highland White Terrier1Affenpinscher
Bedlington Terrier
Bloodhound
Bull Terrier (Colored)
Bull Terrier (White)
Clumber Spaniel
Cocker Spaniel (A.S.C.O.B.)
Cocker Spaniel (Parti-Color)
Collie (Rough)
English Setter
Irish Water Spaniel
Kerry Blue Terrier
PapillonPetit Basset Griffon Vendeen
Pomeranian
Pug
Scottish Deerhound
Siberian Husky
Skye Terrier
Standard Schnauzer
Sussex Spaniel
Welsh Terrier
Whippet
Yorkshire Terrier