Looking for a way to get all Disambiguation_pages from wikipedia api

Hi. Im looking for a way to get all the pages with category: Disambiguation_pages
I have built the following request, seems to be 80% - 90% accurate.

https://www.mediawiki.org/w/api.php?action=query&list=categorymembers&cmtitle=Category:Disambiguation_pages&cmlimit=500&cmtype=page

Most of the results are actually part of Disambiguation_pages.
But I find results like Statistics or Lucene or Internet_Archive that actually are not within this category.

How can I find only the terms under the Disambiguation_pages category.

Thanks