Regarding the placing of angels instead of people into the text in Ephesians, there is nothing in the context to justify that. Paul is writing to a church - a group of believers. From start to finish he anchors them in Christ, now part of the commonwealth of Israel with access by the Holy Spirit to the Father, and now separate from Gentiles who don't believe in Jesus. By the time Paul gets to chapter four he has prayed for them twice, (We don't pray for angels.) and begun to give them practical advice about how to comport themselves to the glory of Christ.
In chapter five, v 9, he refers to the fruit of the Spirit. This is something that only those who are grafted into Christ, can bear. Only in chapter six, v 12, does he specifically mention non-human powers - and principalities (realms of domination by spiritual powers) - and the rulers of darkness of this world.
The people in Ephesians aren't demons, if that's what you're asking.