Who gets to decide what is total and what is not? I could try to call my Baptist brother a heretic for his views on baptism, and I might get away with it in some circles, but not generally. Similarly, if my Baptist brother was a Presbyterian at one time, he is now an apostate, but only in the narrowest of circles.
That is why I used the Athanasian Creed as the touchstone. Folks who deny that are either heretic or apostate depending on their former circumstances.
Right. Well, keep in mind that these terms are very old and came about in a time when there were not all the denominations we have today. It was easier to label a heretic, because there was only one Church doing the labeling. As for how you Reformation folks parse out the differences, I'm not sure of that.
I could see why, from your perspective, the Athanasian Creed would be a good benchmark for orthodoxy.