the only person who has nearly Jones' height and reach is Gustaffson, but I don't think he has the skill set.
Honestly I think the only way Jones gets beat is if a high level wrestler can somehow manage to take him down round after round and just win by basic lay n pray.
Which could be possible with Dana saying Chael might get the shot if he beats Forrest. Chael's power double is nasty and could get under Jone's reach, question is though can Chael hold him down like he did Anderson.