My uncle flew for TWA for years. His plane was struck by lightning. It blew off the nose of the plane and went down the isle and out the tail. He landed the plane just fine. Our family album has a shot of him inspecting the nose after he landed.
That is why they tell you to stay in your seat. They know it goes down the middle of the airplane.
Unless it hits a wing, which is common. Actually lighting is highly unpredictable. I once went TDY to the Navy's lighting strike lab at PAX River NAS (Md). They had two sorts of "models". One was a full voltage, low current device used with sub-scale models of various aircraft. It was used to determine where lighting was likely to strike a particular aircraft type. They had a P-3 model on the test fixture when we were there. The other could generate a full current bolt, but only over a small distance It was used to test materials. They were blowing holes in a piece of wing panel. That second one sounded like a rifle shot, maybe like a .50 cal, going off inside of a hanger. The hanger was shielded because they also used it for electromagnetic compatibility (EMC) testing of aircraft up to an including the USAF B-52.