AD / AS - Difference between Price Level, Output Price, and Input price?

Working through the Macroeconmics section and not entirely understanding this:

Looking at the Aggregate Supply Curve(s) - when they speak of Price Level, vs Input Price vs Output Price.

How can I think about each (how are they entirely different) from the AS point of view?

Price Level:

Input Price:

Output Price:

Been 20 years since I tackled macro, slowly coming back to me… thank you.