This is a script I am no longer working on though I believe yanfly has stacking states implemented already?
Viewing post in RPG Maker MV: State Stacker comments
Oh, my bad I see.
After looking it up while that can kinda be achieved, it seems require some Notetag scripting to get the effects going, and I'd rather not go through all of that process for most states that stack.
I got kiiinda close with the visuals I wanted from editing the plugin file by editing out the draw functions, but having more than one stack will cause a visual bug where a seperate invisible state icon with VISIBLE counters to appear. Guess I'll have to take this L.