This is a really weird question to answer because most of the fighters you think could do it are HW's? If the HW's had to cut down to LHW then they are all screwed.
So is this like a catch weight thing? Even then I don't think anyone else could've done it, assuming each of the LHW's had proper time to prepare for a catchweight bout.
Khamzat would have zero chance imo, ZERO. A lot of these fighters are very underrated, Rashad Evans for example was never submitted a single time his entire career, and hurt Jones as badly as anyone ever has. Khamzat's skillset is not developed enough to deal with this amount of great fighters who are all as big or bigger than him. Even Jones with his hell bows, couldn't get stipe out of there. And Jones is a superior grappler to Khamzat, Khamzat would get squashed or KO'd against a lot of these guys. To beat this litany of fighters, you need to FINISH them. Khamzat has never finished an elite fighter aside from the Whittaker fight which was in fact a jaw injury disguised as a rear naked choke.
Peak Anderson Silva could smoke most of the guys on this list, but Stipe & Gane are a step too far just on size alone. And the way Jones beat all of these guys while not once being wobbled, dropped, or overwhelmed is absurd. The Vitor armbar was the only submission he was even caught in.
There is only Jones, no one else could've done it.
