Not according to the American Kennel Club
They also identify the generic term "pit bull" with the American Staffordshire Terrier, the dog most commonly identified as a "pit bull" in the US.
The UKC (United Kennel Club in the UK) identifies this animal as the "American Pitbull Terrier". They stem from the same lineage though there has since been drift - one of them now tends to be a little larger than the other but I've forgotten which one. They are basically the same dog however. And especially when you get into the bully-breed mixes, you really can't differentiate them very easily from at least some members of other related bully breeds.
In the USA, there is no breed recognized as "Pit Bull" and the term has historically been applied to any bully breed used to fight in the ring/pit pretty much all over the world.
ALL bully breed have been used for fighting, bear bating, bull baiting, and as war dogs at some point in time. So have nearly all other breeds of dogs. ANY dog can be - and has been at many times throughout history - taught to attack other human beings. ALL of them. Except maybe Boston Terriers, LOL!
As for "maliciously lumping" dogs together to somehow sully the names of all the bully breeds, that is just plain not the case. It's just a fact that "pit bull" has always been used as a generic term for a dog participating in particular types of activities - not a particular breed of bully dogs.
I have NOTHING against "pit bulls". My brother owned an American Staffordshire Terrier (NOT a "pit bull" except in that it is a bully breed) and I owned an AST mix. Both these dogs were sweet as pie. But we'd both had them from pups and hadn't trained them as attack animals. Mine only weighed about 25 lbs, but she looked like a monster from the chest up. She would take me for a brisk morning drag every morning that I lived in Puerto Rico, and grown men - grown macho Puerto Rican men - would cross the street rather than get close to us. I felt VERY safe with her. I lost her to a heart attack when she was about 8.
However the idea that these dogs are somehow incapable of being trained to be vicious and dangerous is itself a dangerous misconception. ANY dog can be thusly trained, and pretty nearly all of them HAVE been. I joked about chihuahuas not being likely attack dogs - but they HAVE badly injured people, even being that small.
So have poodles, both the miniatures and the standards. And Dalmations. And Collies. And beagles. Ad infinitum. ALL dogs have this capability and all breed have had many members that have been trained in this capability.
The idea that no "pit bull", whatever YOU think that term means, had ever caused harm to a human being prior to the 90s, or that you can totally train/breed those capabilities out, is just plain wrong. And dangerous. Way more dangerous than your average dog of any breed.
If you think a 55 lb dog is not big enough to hurt a human being, you are very very much mistaken.
I think the laws against the "pit bull breed" are not only meaningless (because that term is so commonly and frequently used to mean something pretty generic), but stupidly wrong-headed. If you somehow magically manage to get rid of every dog on the planet that scares you, you'd soon find some other dog breed to be afraid of, because people will just start using another breed. They already do, as a matter of fact - "pit bulls", whatever you think they are, are no worse than German Shepherds, Doberman's, and Rottweilers who have been trained as attack animals.
Pretty soon there'd be no dogs left.