Revelation: I can’t pretend to know nor follow what’s going on here. But I can tell you that “Joseph” is made up of two tribes (he had, after all 2 sons) Ephraim and Manasseh and the other thing is that Dan is not mentioned. As I look at the Old Testament I see that Levi has no inheritance with the other 12 tribes (yes, there are actually are 13 tribes) for the Lord was their inheritance. This tribe of Levi was dispersed throughout the twelve tribes in order to minister to them.
Gospel: Luke 9:51-62
New Testament: Revelation 7:1-8
Old Testament: Genesis 2:18-25