Lhw. And why do I say this? If you followed his wrestling career, he was least dominant at the lower weights and got more dominant as he went up, specifically most dominant at 203 pounds. The reasons for this is like we saw with DC at heavyweight: DC's strength and technique are enough to hold up to the larger men owing to his world class rasslin' pedigree, but his speed advantage because more exaggerated and "speed kills". If a non wrestler or grappling expert goes up, many times they simply get overwhelmed by size and strength, and even if they are fast, they simply get manhandled like Fedor vs Bigfoot. A guy like Khamzat is not going to get man handled by anyone owing to his world class wrestling pedigree, but his speed difference is going to get more exaggerated
Heck, he has the same height and more reach than Bader even. HW and becoming a quadruple champ is truly not out of the picture.