If I remember correctly, the Greek prefix is the same in the NT for Archangel and Chief Priest. There were many Chief Priests in the NT, so it is logical to assume that there could also be many Archangels.
Besides extra-biblical literature from that time and just prior to that time refer to up to7 archangels. Not to mention that the book of Daniel makes it clear that Michael was one of several archangels.
I’ve had Witnesses even admit to me that they didn’t believe the Michael-Jesus BS that the Watchtower teaches.
pseudo