Here the deal. Most of those churches are called “protestant” churches. A couple are heretical anti-trinitarain cults. It is wrong to lump these cults into the same class as protestant churches. All of the protestant churches in your list affirm both the Apostles Creed and the Nicean Creed which states “I believe in the holy catholic church”. So what does this make those of us who belong to “prostestant” churches? It makes us “protest-ant” that is protesting catholics. All orthodox western Christians are branches from same tree the root of which was established by Jesus Christ in 33 AD. The Roman catholic church is one branch, the partiarchal orthodox churches are another branch. The protestant churches are branches off the roman catholic branch, but we all share the same root.
The problem lies that when a limb breaks off from the body it inevitably withers and dies — we see that with the Anglicans now with the problems with Gene and more glaringly doctrinal issues. There are good, Christian Anglicans, but the groups doctrinal issues are compromised by the idea of a protestation.
Ancient churches are not called Protestant churches and many Baptists do not refer to themselves as protestants. They did not arise out of the protestant reformation. Therefore to say Baptists are protestants is historically and theologically incorrect. Our rise did not come out of protesting the Catholic church, rather out of affirming what Scripture taught. The fact that much of that entailed being in opposition to what the established church taught does not make us protestants, however, for the root is not in the establishment but in Scripture.