P4P using skill-sets from much lighter weight fighters, I think there are a few of them. One in particular would be a LHW equivalent of Frankie Edgar. Someone who:
- catches a lot of kicks and can counter off them
- has active movement, quick side-steps to aid in octagon control
- outside of Cruz, he is arguably the best transition fighter in MMA, and his phase-shifting would provide problems
- tricky set-ups, disguising his striking and takedowns, and a nice feinting game he can use to keep Jones on the back-foot where he fights like an amateur (showed a couple new counters in the Cormier fight though)
- understands how to counter underneath a punch and over the top of it to keep you hesitant
- goes to the body and his body shots and left hook flow perfectly into his knee tap
- has spent a lot of time developing his kicks and he won't concede the kicking game and will trade (although his impact wasn't the same, him out-landing Aldo in low kicks was an important part in how he was able to be competitive with him in the later rounds), so that he doesn't just stand there at range, plus despite Edgar's flaws in his defensive footwork Jones doesn't have the jab that Penn or Aldo did, or the powerful low kicks of Aldo, to really expose it
- is one of the best in MMA at getting back to his feet (very crafty with how he uses his shins as a block, finding the angles to push off for returns, prevents passes and posturing up opportunities by hand positioning from his thigh and getting knee to hip in order to position his other arm and open up overhooks/head control, etc.) and can defend against the clinch TDs/body-locks Jones likes well, very adept as using things like wrist lock grips to free his arms to base for instance
- can wrestle and work for takedowns/control from various positions and techniques/styles, along with shifting to his striking fluidly (punching into TDs or using his wrestling to put guys off-balance and hit them)
- has a developed top game and improved g&p if he were to get Jones down (and Edgar gets down pretty much everyone, even Aldo who has the best TDD in MMA)
- is super tough, can absorb almost everything you throw at him (and Jones isn't the most powerful guy), won't be dissuaded, and won't run out of gas
- similarly to Jones, adapts very well and can out-think guys even when he is badly hurt, just one of those fighters who gets better/more comfortable even, the more he gets hurt
There are a bunch of other things, but I think you get the point. Edgar wouldn't stomp him but he has answers for almost everything, and I would be very confident betting on him. He would have some rough moments, but I don't think Jones has the tools against someone like Edgar to keep it in-fighting or keep him at the cage (Edgar's cage generalship is a bit underrated, imo).
Jones' balance, speed, and strength are standout athletic traits he possesses relative to most other guys in MMA, but Edgar has dealt with guys who have similar advantages there (balance with Penn and Henderson, speed with Swanson, strength with Sherk or Maynard), though the combination of those three things would be a problem for certain positions. Of course, there isn't anybody like that among the heavier guys, and that overall skill-set has Edgar still as one of the 10 best p4p fighters (well he should be considered that), but Gustafsson is probably the closest to it. I still think him and Cormier have solid shots at beating Jones.