:blob_evil_two: They are mostly heroines under a different name who often end up selling fashion accessories, bakery goods, and soap to the fantasy world. And the obligatory break-up of an arranged marriage.
:blob_hmm_two: That aside, the tag villainess is more for the flair, the aesthetics, and the genre. But as you might know, you actually never ever see a real villainess in all the villainess stories.
You can ask the mod for further information. It was just my suspicion based on your works. That being said, none of your works are actually allowed. They are not disallowed. That is a huge difference.