I think he is technical, for MMA standards he have a good stance, man, he is getting rained by the best coaches he can have, Le Banner and the other with dreads which i dont know the name.
He simply didnt have enough time to show off because he just knock out people too fast, the other guys he fought stood longer but they were lower levels and he was also at the start of his career, man i can tell you this Ngannou not only will be the most brutal Champ of all times but he will show some technical stuff too, i think his jiu jitsu will be mediocre tho, his limbs are long and he dont have the body shape for good jiu jitsu, he can still brute force his way on the ground tho, an old Werdum on the ground can be as much experienced you want but Ngannou is one of those scary feral niggers that can unelash his inner survival mode and brute force his way everywhere in any condition.