The Bible wasn't written in English.
It doesn't matter if you use the KJV or the NWT or another English translation - they're all compromised. They all have various corruptions based on the bias and misunderstanding of the translator.
When the KJV was being translated from other languages, some common apostate teachings included the hellfire doctrine and the Trinity.
The corruptions regarding so-called "multiple archangels" go way back to cabbalistic Jewish apostate rituals, even before the time Christ came as a man.
The word "angel" can mean a spirit person. It can also mean a messenger.
The verses at Hebrews 1:13,14 distinguish that there is one spirit person who is above all the other messengers.
Michael is the arch-messenger. Jesus is the only creation above all the other creations. Jesus is Michael.
Revelation makes clear that Jesus is Michael, the one with the authority of the Christ, the chosen one.