If I type MY full name (less common than Lucas Smith, I’m sure) into Intelius, it comes back with two results for me, including one for my college town. It also gets my ‘relatives’ wrong.
If anything, the fact that Intelius only had two hits specifically for Cedar Rapids, and both had essentially the same age, strongly suggests that there’s not a second Lucas Smith running around.
So good job. You’ve strengthened the evidence that it’s the same Lucas Smith.