The following post explains a few types of anusati:
Anussati and Anupassanā – Being Mindful and Removing Defilements
When it comes to contemplating the “disgusting nature of the body”, most places I’ve read use the term asubhanusati to describe that, not kayanusati.
This is of course a misinterpretation of asubhanusati; I’m just saying that many sources explain it that way.
Best,
Lang