IV Filters

Is it possible to add an option to use IV Judge ratings for filters rather than/in addition to having to type in the intervals that those ratings represent? I think this would be a huge QoL feature

Is there any documentation on these ratings?

Also if you didn't know there are hotkey controls to set predefined values. Hover over the IV labels and it will say what they are.

The intervals are listed in Bulbapedia at this link: It shows intervals for generation 7 but they are the same in generation 8, this is also backed up by Serebii at this link under IV Judge

IV of 0: "No Good" IV range of 1-15: "Decent" IV range of 16-25: "Pretty Good" IV range 26-29: "Very Good" IV of 30: "Fantastic" IV of 31: "Best"

I was not aware of the hotkey controls, that does look useful thank you.