I am pretty mainstream about the way I understand angels. For me, I understand that angels are a separate order, never human and never meant to live lives as we do.
I know that angels can certainly jump into time and space and appear as people or animals, but being pure spirit, they have no need to evolve in a soul journey as we do.
When we talk to the angels, they applaud us that we are willing to incarnate into these very dense bodies and face the challenges that living can present.
Other teachers will say that indeed angels live among us. I say, take what resonates as truth for you. You don't have to agree with me or others -- what does your own intuition say? That is truth for you.
Deb