[Cronos]

I suggest that for Protestants we use "Trinitarian Christians".

That doesn't hold true for various branches of Protestants. And, the term "Trinitarian" would include Orientals, Assyrians, Orthodox and Catholics as well.

[Dr. Eckleburg]

The term "Protestant", like the terms "Christian" and "Roman Catholic," implies a Trinitarian perspective.

All Protestants are Trinitarian. Mormons and Unitarians are not Protestants.