I have to admit that Michika's route was the only one I didn't play because it was the last one left and I'm not a fan of the domination myself, so I'm not sure how innocuous it was and I'm not sure how prevalent the female domination "light" thing is in VNs, at least for ones translated into English. I can't even think of a single title at the top of my head, except Imouto Paradise. Most of them never go further than the heroines being aggressive at initiating sex and some mild teasing.
The best I can do is, again, the VNDB tags. There's the
Female Domination tag which probably spans anything from the light stuff that I assume is in Imouto Paradise to the harder stuff, and
Sadist Heroine tag. Both of these apply to Imouto Paradise. You can probably filter some of the hardest stuff by avoiding VNs with the Masochist Protagonist and maybe Submissive Protagonist tags, but neither of those two tags seem to apply to many titles, which could either mean that they are underused or that there just aren't very many VNs with really hard BDSM elements where the protagonist is the submissive part.
Then again, there's always the still untranslated
Imouto Paradise 2 which, judging by the pics, certainly seems covered in the footjob department :v