McGregor is not really a good striker. He has some flashy kicks, but you can go down to any TKD lesson & find girls half McGregor's size & age throwing kicks with greater technique & still capable of maintaining proper balance.
His low kicks are awful, too. Slow, zero torque, just terrible execution all around. Literally looks like a first week novice. Ben Askren-esque in his deliverly, almost:
He has good power, though it's more the result of his sheer size at the weight than natural power. He's very stiff, upright, a complete lack of head movement & generally over-extends himself.
He's essentially a tough brawler that will take two or three shots to land one. Kind of like the Tex Cobb of the MMA world. Although how tough we'll have to see until he actually moved up to his proper weight and starts fighting guys of a similar size.