Which character would you use to describe the 5 levels of Yandere?

Some of my takes:

Level:1= Ako Tamaki. Stalking obsessive, ut practically harmless (if I remember correctly)

Level:2= Mizore Shirayuki. Similar to level 1, but has proven to be fully capable of actual violence. But is manageable, most of the time.

Level:3= Akane Hiyama. No a notable degree of dangerous delusion is added in, and is significantly less stable, as well as needing much more management, and reassurance.

I have some ideas for 4, and 5, but will add them later.