No angel is ever called a saint in Scripture...
No, it's more simple than that -- it's from the dictionary:
Why are they called saints if theyre angels rather than humans?The word saint (Greek, hagios) means holy one.
It does not mean holy human being. As a result, it can apply to holy ones that arent human.
Since St.s Michael, Gabriel, and Raphael all chose to side with God rather than the devil, they are holy angels and thus saints.
All angels that sided with God are saints, but these threes names are known to us, and so they are picked out by name in the liturgy.
Sooooooo?