Even from the JPN fandom.
I can't find anything on most of the manga. No scans, no fanart, and very few Google or Yahoo results other then the standard pedia style ones.
It's not like these manga are rare or expensive either. You can pick them up for a few yen or dollars and find them very easily.
The only non-Special official manga that anyone notices aside from a few comments is DPA and that's only from the English fandom.