The offenders are going to be very different I think.
The Trump shooter did scout the area extensively, and picked an excellent spot to give himself a view of the stage. He had absolutely no reasonable expectation of successfully pulling it off however, and had zero chance of escape. He used a semi automatic rifle, and managed to miss a relatively easy shot on multiple occasions (Trump turning his head shouldn't have been a factor).
This guy did have a reasonable expectation of pulling off the murder part, and fired a single shot. He clearly knew exactly where to set up, and how to make his escape.
The trump shooter had an assassin mindset, which basically means he was a psychological mess.
As John Miller said on CNN earlier, this guy appears to be a "sniper," which means he is organized, and methodical.
So I think we're going to be talking about two very different psychological profiles. More Luigi Mangione, than Thomas Crooks.