Unfortunately for Khabib, he cannot even enter the GOAT conversation. All he has are hypotheticals, by his own choice.
As far as Jones goes, every and any fighter puts him on top and they all know that he was on roids. Just goes to show his level. They sure helped, but he was not the only one using them. And however hard it is do admit that, he is just insanely skilled fighter. Level of competition on lenght of reign are unmatched. Man was going against experienced beasts in title fights since he was 23. There is no one who was even close to that.