Nilox: in the wastelands area where Dahag is, I think in the mountains near the northeast.
Musharoo: on one side of the broken bridge at the south of the wasteland, I forgot which side. I think the wastelands side.
Cherub: north of Windon, if you go kind of northwest you’ll find a spot on some brown mountains. That’s where it is.
This is what I recall from my memory, at least - provided none have changed positions since beta.