Oh my, this is going to be difficult!
Sporting: Golden Retriever (< I am hoping to have one some day) or Nove Scotia Duck Tolling Retriever
Hound: Either a Greyhound or a Basenji
Herding: Pembroke Welsh Corgi or Australian Shepherd
Toy: Pug
Terrier: (English) Bull Terrier because they have that uniqueness, and in second American Pit Bull Terrier. (I love "Bully Breeds".)
Non-Sporting: Shiba Inu or Chow Chow (I have or have had mixes of both breeds. Our first dog that wasn't a Beagle was a Chow Chow/Australian Cattle Dog mix, she was the best dog you could ask for. And I have a Shiba/Pomeranian mix puppy currently)
Working: Siberian Husky, Greater Swiss Mountain Dog, and Akita. (I like a LOT of breeds in this group, hard to choose, and I of course like more of them, haha. I plan on having either a Siberian Husky or a Golden Retriever when I'm not living in hick country where everyone freely shoots your dog...Sadly enough, they'd go crazy on a Siberian and claim it was chasing their cattle, even if it never went near them.)