There may also be Anon posts from people who are not Q per se, but work closely with the Q team on executing the Plan, or are not far removed. These associates may help qresarch in the same way as we suppose Q does when posting as Anon - privy to insider knowledge and wanting to help the hivemind find productive paths. But not actually be the same people as Q. Posts as Anon would look basically the same, whether it's from Q or near-Q.
Whether or not these associates know they're working with Q is not important, so the "no outside comms" principle doesn't affect this. And it's easy to imagine that people working with POTUS or other obviously clued-in people, if aware of Q and the general research mission, might know how to be involved here in a way that is helpful and consistent with the security and sequencing of the Plan. At least in the sense of knowing what hints to drop, and when.