I'm not an """equestrian""" by trade so I will defer to the knowledge that a legitimate horsefucker not an abuser either
taught me from 2002-2004 before he disappeared.
First pic problems:
#1: both of them need some serious hoof work. NOT "shoes". HOOF WORK. As in with a hoof KNIFE, a black iron (95% iron, 5% nickel) FILE, and a good amount of strength. Their hooves are too tall and I don't see a speck of stone in the field, meaning that they need constant hoof care. Equines are perfectly fine walking across stone all the time as doing so chips off small amounts of the nail. And yes, that is a SINGLE nail spread across the entire 'hoof'. I would show images of what a removed 'hoof' looks like.. but I can't stand gore on that scale.
#2: without proper hoof trimming (What I was told is the following: "FUCK HORSE SHOES AND FUCK EVERYONE THAT USES THEM" by a nearly psychotic person. He may, or may not have killed people for improper equine care. Natural farriers are the best for determining hoof work.) That can easily caused rolled joints which become serious problems for young
(5-10 year old) ponies, particularly damaging vital cartilage. Which, unlike in humans, cannot be replaced and are severely difficult to self-mend.
#3: nice clean legs, one would think. Not quite, there's a slight knot on the left's front right knee and a peculiar all-around bulge on the right's left knee. Those could be from an earlier injury/injuries, minor infections (doubtful on the right as there are no scar-markings, which are easily seen), or arthritis. Ponies are MUCH more susceptible to arthritis and moderately than horses are (due to selective inbreeding). Humans fucking up yet again.
#4: both are potbellied with a hefty build, meaning they're definitely overweight, but NOT obese. That issue requires time and deliberately careful exercise to overcome.
#5: "Fuck halters and the dipshits that use 'em".
Questionable 8/10 on these two. They're obviously pair bonded (extremely close and comfortable friends) and should never be separated.
Second pic problems:
#1: serious hoof work for both.
#2: left isn't as potbellied as the first two, right is definitely FAT. Not fat as in Free And Thicc, no. Right's height-mass build is slightly concerning. On a pony or horse, one should be able to feel the ribs through a layer of SOFT fat covering and the hard musculature underneath.
#3: were they free roam? If yes, they NEED 2-3 acres (1 acre per pony to live 'easily', same as humans do with a decent sized house+yard+garage). If no, they STILL need 2-3 acres. Regardless of that, if ponies are not free roaming their diet needs to be fairly strict so that they do not become obese.
#4: "Fuck halters and the dipshits that use 'em."
Solid 9.2/10. Pair bonded, should never be separated, will require some work to achieve normalilzed weights and will definitely need multiple touchups on their hooves.
Third pic problems: .....whew.
#1: ALL of the above complaints. Those four need SERIOUS hoof work since they're 'standing forwards' (I don't understand the full biological meaning of that term except it's a problem). When ponies/horses 'stand high' (same as previous, they're leaned too far forward on their hooves causing excessive wear and tear on vital cartilage/musculature/bone), that can become a fatal.
#2: white one is majorly obese, brown/black is good weight, grey/blue/dirty white in rear is somewhat overweight, gray/blue/dirty white on right has good weight. If you can [i]barely/i] see an equine's hip muscles and the TINIEST protrusion of pelvic bones through the coat/fat/soft muscle, they are are in excellent shape. If you can't
#3: legs look good on most of them, though would need side, rear, and frontal images to determine immediate probems.
#4: rearmost has unusually long body, can be a compounded problem if pony-horse crossbreed.
#5: "Fuck halters and the dipshits that use 'em."
Highly questionable 7.3/10 to 8.5/10: they are in a comfortable herd, not showing any signs of distress, and have plentiful grass. Since I can't see enough of their hooves and legs, more information is needed to make a final determination.
Third pic problems:
Equines are SOCIAL CREATURES, regardless of wild or """tame""". Being alone for them is akin to EXTREME DEPRESSION IN HUMANS.
#1: has a moderate listing (weight distribution) issue. The right hoof is not parallel to the left hoof at a neutral or standing posture. Ankle/knee/shoulder injuries are difficult to spot without noticeable scars or prior knowledge. Judging by the angle, you took that image at a 1-2% degree inclination towards your 'left'. Compensating for that in picture means there is a moderately painful hoof, ankle, or knee displacement. Based on the size of the lawn, the enclosure is not large enough to allow free roaming, meaning that the pony does not have enough room to roam freely, thus being unable to develop adequate cartilage/musculature/skeletal strength. I highly doubt the problem, or problems, are severe (cannot be treated), though they would take a high investment of time and gentle roaming exercises to correct.
#2: definitely overweight. The pelvis cannot be seen and the pelvic muscles are buried under a thicker than normal level of fat/soft tissues. Not hard to correct with proper diet, exercise, and play toys.
#3: front legs are at awkward positions, indicative of either incorrect hoof care or from being overweight >1 year. Easily managed if either of the two, though injuries would complicate matters.
#4: "Fuck halters and the dipshits that use 'em."