Yes three people were hit, and in other analysis you can see the angles from which they were shot. Those people were very likely hit by the erratic fast volley after Trump was struck in the ear and went down. Although on analysis indicated the two sitting close together were hit by the fire that came close to Trump, and one was believed hit by the round that pierced his ear.

It is very hard to control target acquisition when firing as fast as the shots in that last volley. The first three muffled shots were the pro with measured effective timing between shots.