Speaking from recent experience with my old-lady-goat, I would be very suspicious that that second goat in the OP [the "palomino spotted" one] has foundered.
The way she has her toes "up," coupled with the ridge-y appearance of her horns, and the fact you said that her hooves were extremely long when you got her ALL are huge founder indicators. How are her hooves? Are they especially hard compared the others?
I might be totally wrong, but founder, and chronic founder, is very under-recognized in goats. For myself, my 14 year old goat recently foundered quite badly after having a horn amputated. Her founder this time was triggered because she has chronic laminitis that no one/I never recognized, and her body was already super stressed. Adding one more stressor caused her to go over the edge.
It also turned out that her weight issues [she's been next to impossible to get any weight on] were due to something like chronic sugar intolerance - my best guess.
After getting her on 1.5% of her body weight in soaked beet pulp shreds, plus .5% of her body weight in Tripe Crown Lite [for horses], she's put on weight for the first time! It's only about 3lbs of feed per day [she's about 90lbs and she doesn't have many teeth so I can't count on her grazing] and I've had to cut that extra feed back so she wouldn't get too fat!
I've fed her COB and Calf Manna and all the higher-sugar "puts weight on fast" stuff for years, with no results.
Anyway, just some thoughts. :)
Fabio - 13 year old Arabian/Lipizzan gelding
Hazel - 14 year old Angora goat
Atticus - 4 year old LaMancha/Alpine cross goat
Rest peacefully, Lacey.