La Chiara: You’re right, I’m using a precise definition of Protestantism as opposed to the common one, but at the risk of nit-picking, I"m doing so because the common term is loaded with misconceptions.
The origin of the term “protestant” came from the group of imperial cities and their leaders in Speyer in 1529 who “protested” the Edict of Worms, (not the Catholic Church per se, although they were certainly doing that ), which forbade Lutheran teaching in the empire. In European Germanic countries, the word “protestant” for the most part retains its early meaning, and is associated only with Lutheran churches, as opposed to other churches deemed “Protestant” by the Catholic Church and mainstream society.
Generally it is the Catholic Church who would consider all sects opposing it or breaking away from it at the time of the Reformation “protestant.” But as I tried to demonstrate, there are enormous differences between these sects, and both Anabaptists and Protestants would not consider Anabaptists to be Protestant at all. In fact, Anabaptists were first persecuted by Protestants.
In addition: The Baptist Church has nothing to do with Anabaptism, other than the fact the neither is Catholic. Anabaptists did refer to themselves as “baptists” when they started, but they are not at all the same sect or faith; only the name is in common. The Baptist religion started as an offshoot of congregationalism and Puritanism, mainly in English speaking countries.
Don’t know if that helps. My main point is that Anabaptists and Protestants would be very hesitant to identify Anabaptists as Protestants…(the same way they would be hesitant to identify Mormons or Jehovah Witnesses as protestants) But that’s a can of worms. Yikes!