Sir, I do like Jon Jones, but the question of the topic was "Who is the greatest of the greatest", and according to experts Jones might or might not be in Top 5 of MMA GOAT's.
Fedor's status and reputation was the strongest ever. He was the smallest heavy weight yet beat them all (yes, I know, but he beat several of the UFC champs, too, and overpowered some of them).
Jones has dominated through his excess in reach, he hasn't have strong competition and yet he's still not able to finish his matches. If he would move to heavy weight, where other of his reach and size are, and would dominate there, then he might be the GOAT. Or at least if he would stop failing in life and doping tests first.
Anderson Silvia has been said to be the GOAT by statistics, GSP or Fedor the second. From active fighters Conor would challenge Jones' chances to become GOAT. Aldo was said to be a possible GOAT, and see what happened with Conor.
Btw, few years ago there was a poll in Brazil amongst the MMA fans for who is the GOAT, and you'd expect Anderson, Jose, Wanderlei and others top the list. Fedor got more than 70% of the votes. That's how high they rate him. And his attitude and humility is beyond pretty much anybody mentioned in this whole topic, maybe besides Efren and maybe Pele.