Why exclude the mainstream ones? Is there any news network that didn't report about WMDs in Iraq?
IIRC, the more sensible ones (at least a few in Europe) reported that "Powell said he had proof" of WMDs in Iraq. So yes, they reported on it, and no, not everyone publication about WMDs in Iraq is automatically fake news.
Take your partisian bs somewhere else.
So "fake news" just means popular right wing news sources. . . good to know.