What these breeds have in common
The Sporting Group holds the breeds developed to work alongside a gun: retrievers, spaniels, setters and pointers. Golden Retrievers, Labradors, English Springer and Cocker Spaniels, Irish Setters, Vizslas, Weimaraners and Chesapeake Bay Retrievers all sit here.
As a grooming category it is one of the more coherent groups, because the work these dogs were bred for shaped the coat directly. Most of them carry a water-resistant double coat with long feathering on the ears, chest, belly and the backs of the legs, and that feathering is where essentially all the trouble is.
The exceptions are the short coated pointers. A Vizsla or a Weimaraner has almost nothing to groom and belongs with the smooth coats.
What this group means for grooming
Mostly water-repellent double coats with heavy feathering on the ears, chest and legs. Feathering is where the mats form.
What actually decides the grooming
The coat type, not the group. It sets the tools, the interval and the price, and two dogs in this group can need completely different appointments.