Jones would have given all of them a good fight, but beat them all i kinda doubt it, Ali was just as smart as Jones in the ring and well i think that he would have been able to take Jones, also at LHW i think that Michael Moorer would have given him hell, he was an ok HW but remember Moorer was an outstanding LHW, winning all of his fights by KO in that division, he was a pretty smart fighter, a southpaw, quick, great power, and also an extremely good and effective right jab