I'm going to just bring up Anwar Al Awlaki. A prominent contributor to Al Qaeda's "Inspire" magazine, and a preacher of that radical sect.
I personally do believe the official US story that he was actively recruiting and actively participating in Al Qaeda. but a lot of people have debated with me otherwise.
Clearly, he was "in" the Al Qaeda culture, but publicly at least... some believed him to only be a preacher.
War is messy, to say the least. I'm not sure if the truth will ever come out. Nevertheless, I'm personally in the belief that Anwar Al Awlaki was too personally connected to a number of attackers, so he almost certainly was an operative.
Nevertheless, I bring up this example to demonstrate that the line between "operative", "journalist", and "preacher" can very well be blurred during wartime. Regardless, the US certainly ordered an assassination through our Drone technology.
Much of the evidence to his Al Qaeda "operative" connections is classified unfortunately. So the US Documents at least, won't be released for many years to come. In any case, even with only the public information, its clear that there's a "Lot of Smoke" as they say, and where there is smoke, there's probably a fire. But nothing really proves him to be an operative publicly (just a lot of corroborating evidence and close personal-connections to attackers).