I'm a Jones hater, but I will give this my most unbiased answer.
No, and that isn't because I hate him.
To be the best you would have to distinguish yourself physically and skillfully, and I can name at the very least, 5 fighters if not 10 that fit the bill better than Jones. That is no knock to him though, as a fighter he is great, but I will explain why.
Fedor
GSP
MM
TJ
Frankie E
Aldo
Cruz
and I'll stop here.
These are just a few, now what do all these men have in common? Unlike Jones they are/were great everywhere the fight goes, and in every facet. The only thing stopping Jones from being on this list is his standup and size advantage.
His boxing if frustratingly atrocious, has no ability to use his length to damage fighters besides poking their eyes. It makes you wonder if he trains boxing at all. That is the clear weakness of his game, the inability to use his advantage fairly to damage opposition with jabs/straights from outside...and landing effective uppercuts from mid range. He is the mma version of Paul Williams...Lengthy fighter who can't use his length to save his ass.
Jones falls into the category of great fighters with one GLARING hole in their game.
Jones(boxing)
Anderson Silva(wrestling)
Cormier(Kickboxing)
Mousasi(wrestling)
etc...
That's not shitting on these fighters, it's a testament to their success given the hole they were able to overcome to win as much as they did.
As far as best fighters are concerned, Jones doesn't make the list.