agian, the problem is that the umbrella term protestant covers so many conflicting points of view: would you say arminians, southern baptists, high anglicans, weslayans etc have the same dogma?
Frankly, aside from SBs, I don't know enough about those other faiths to comment on them intelligently. From what I do know, I think I would feel general unity with any Bible-believing church. I do not think it is fair to define protestants as any "Christian" church that isn't Catholic. So, while SBs and JWs are both not Catholic, I have no association or agreement with them at all. However, in my own Southern Baptist church, I am sure there are plenty of people whom I respect who do not share my reformed views. That's OK, and I have no plans to leave my church. We are nevertheless in unity because of our reliance on the Bible, and many other beliefs.