Agree with NM & Bubba. Hard to tell from these, but superficially, look like some minor probs with hoof form, but overall quite nice looking! See Good Hoof Photos - How to take Good Hoof Photos
if you want to get a good critique of them.
Yeah, the 'old bruising' is either abscess or injury, that's grown down from the hairline. I'd keep the walls well rolled(esp as it looks a tad flared there) and as it gets closer to the ground surface, expect that it will probably break away & look uglier for a bit. Don't worry, but I would also keep an eye on infection - you can soak regularly with apple cider vinegar or such to keep it at bay.
The side bruises are likely no more recent(just without air, they stay red) and seeing the bit flared quarters & that the rest of the hoof looks OK(no rings, ridges, etc), I'd be inclined to think these probably are bruises rather than a metabolic/feed upset that happened around the time that level was at the hairline. As it's on both sides(of both feet?) I'd think it's concussive bruising rather than injury. Eg. the quarters were left a little long, so there is more ground pressure on the laminae/corium at those points, so travelling on hard ground caused damage.
A horse's walls should be kept about the same height from the sole plane(gen 1-few mm, depending on work surface) right the way round the hoof. This means that their quarters should be generally 'scooped' to some degree compared to heel & toe.
I think it's just so important for owners to educate themselves on principles & factors of health, not just leave it up to other's opinions & 'expertise'. On feet, hoofrehab.com, ironfreehoof.com & barehoofcare.com are 3 great places to start.