There's been a lot of talk about both as rather non existent. However, no real in-depth information on it either, just mere descriptions. As far as I understand it, Ngannou relies on brute strength and very basic rudimentaries to handle the wrestling part if needed, and his Jiujitsu is even more rudimentary than that. The problem with both is that once he gasses out, there's no brute strength compensation left and his game falls apart. But he does train both extensively, does he not?