You are correct in that officially only the Second Foundings and the Dark Angels are the Unforgiven. There are some players who have made later foundings that also hunt the Fallen. The explanation that I tend to prefer is that they've encountered both and are confused. Then they take up the mission of hunting the Fallen to figure out what is going on within the Unforgiven.
Officially, the Angels of Death has not been taken as a specific Chapter name thogh it is used generally to describe the Blood Angels, Dark Angels or Space Marines in general.
Let us know if there is anything else we can help you with.
Officially, the Angels of Death has not been taken as a specific Chapter name thogh it is used generally to describe the Blood Angels, Dark Angels or Space Marines in general.
Let us know if there is anything else we can help you with.