I know that umich counts an A+,A-, and A as a 4.0 when they convert your GPA. Do most colleges count all A’s as a 4.0 or only a few?
Only a few. I know University of Florida does. So, yes, most schools do not shift the grades.
As does the U of CA system.
But my guess is that “most” don’t - there is no definitive, all-encompassing list anywhere. For the most part, file it under “It is what it is.”