One very important question needs to be asked before recommeding any of these. First off, are you looking to just kill the yotes or do you hope to have a pelt for resale afterwards?
None of the above are overly pelt friendly chamberings with the thin jacketed bullets you list.
If your just looking to hammer them and care less about pelts, you can not go wrong with the 6-284. It is an amazing chambering and will do things most 6mms simply can not do.
If you do want to keep the pelts, there are two schools of thought. One, lightweight bullet at hyper velocity, the other is a heavy, hard bullet to prevent violent expansion.
Only problem, either option in a larger 6mm will have alot of energy so if you hit bone, especially on exit, bone frags will destroy the pelt.
One other consideration, if you go with the 6-284, that round will generate enough velocity that it will surpass the velocity ceiling of the A-Max and Berger bullets which is around 3250 fps or so in most barrels.
The 107 gr SMK will take anything you can drive it to. I load my personal 6-284 to right around 3500 fps with the 107 gr SMK. The A-Max and Berger shoot extremely fine consistancy.
So back to the beginning, are you worried about the pelts or not and then we can really get into the meat of the matter!!!