Since 2016, at least 65 different breeds and mixed breeds have been involved in fatal dog attacks in the U.S. including: Akita, Boxer, Doberman Pinscher, German Shepherd, Great Dane, Husky, Labrador Retriever, Mastiff, Pitbull-Type, Rottweiler, and many others.
The risk of being fatally attacked by a dog (of any breed) given an average of 33 fatal attacks every year in the U.S. and a population of 330,000,000. According to CDC data, fatal dog attacks are exceedingly rare - lightning strikes cause more fatalities (~36/year) than dogs.
https://www.fataldogattacks.org/
So even if pit bulls are the “dominant” killers, it’s the “dominant” one out of 33 deaths. Which could be 3.