I just recently went through the ordeal of differentiating some of these knots, John, and I think I see where you are coming-from/going with this. Anchor hitch, double overhand, (double) fisherman's, poacher's, scaffold...all related, kind of variations on a theme.Anchor Bend.. ya mean another double fisherman's with a ring stuck through the double wrap?
I was scratching my head for a while last week trying to figure out why my anchor hitch looked different than the ones in the book even tho it had a double wrap around the biner, and the difference ended up being that the tail of the line exited perpendicular to the biner, instead of inline with the biner going through the wraps. Small difference, but it totally changes how the knot handles a load.
In other words, a double overhand knot, an anchor hitch, and the so-called hitchhiker stopper knot are all the same knot/hitch, just tied in a different order (e.g., big loop then two wraps around the loop, or form two small loops and place tail through them) or dressed differently. It really is mind-blowing how profound these little differences can be...and a little scary.
Edit: This came across as waaay more authoritative than I have a right to be speaking, especially considering the experience and wealth of knowledge some of the members of this forum possess who might be reading this post. I will leave the contents intact, but if anyone sees any misinformation, misunderstanding, it miscommunication in there, I welcome being corrected; please do.