The heels on the right fore will never fully improve until the farrier removes ALL the excess heel and then also backs up the toe (NOT shorten the toe from the bottom..there is a huge difference between backing up the toe (moving the breakover point more rearward ) and 'shortening toe' from the bottom.
There is a tremendous amount of distortion in that foot's outer structure and the farrier is nit seeing it, and subsequently shoeing to the distortion instead of shoeing to where the foot should be.
There is significant flare in the toe and it begins very high up on the front of the foot.Therefore the angle of the bone inside that foot is a lot more upright than the farrier thinks it is because the flare on the toe is causing an optical illusion of a lower hoof angle. The true angle of the bones inside does nit match the outer angle, guaranteed. Traditionally taught farriers(like this one) see the foot as needing more heel when in fact it needs less heel.
After the foot is realigned by correct trimming IF it needs a wedge (unlikely) then a wedge that also incorporates frog support can be used but NEVER EVER wedge up under run heels. TRIM them off, then wedge them.
The other foot, the club foot also has some serious farrier issues particularly the flare in the end of the toe. Leaving that flare can cause the heels to rapidly regrow, backing up the toe by removing the flare will change some tendon/ligament tension issues in the leg and can help the foot to eventually release some of the excess heel. When it is ready. Many farriers leave the flare on a club foot in a futile attempt to try to make the feet match better but that always leads to even more problems for both feet, they must be treated as individuals. A club foot will not ever and can not match the other foot so do not expect it to.