So, the question "What monsters are depicted on the 4.0 DM Screen?" has 3 answers that each contribute a bit of answer to the question and collectively answer it. Rather than 3 separate answers, I think they should be appended one after the other into a single answer, since that's the entire point of the Community Wiki option.
Personally, I've soured on CW answers after my brief dalliance with them. I'd be more interested in seeing you assemble the parts into one comprehensive answer, with attribution liberally sprinkled about. Nobody's likely to accuse a top-20 name in the reputation league of trying to pad their stats, and they'd be wrong if they did.
I don't think either way's right or wrong in this case, though. That there ^^ is what my instinct would be if I were looking at such a thing.
I agree this seems like a decent use case for Community Wiki. I'd also like to see a comprehensive answer that's verifiable and not just "maybe it's this?".
I've posted a Community Wiki answer with numbering: https://rpg.stackexchange.com/a/120494/1204
Thanks to a later edit by TDW, #2 is the only one left without a conclusive answer. If anyone knows for sure what that one is, feel free to add it in.
(This isn't endorsing this as a scenarion which others should use CW as well; I just chose to do so in this case because I can.)