Underappreciated Books to Learn Object Oriented Design and UML?

Please recommend the books. Craig larman is not my level. Grady booch is decent but I have course slides of that book so not want to purchase it.

GoF is nice once you are over UML. It is on my plan.

I am at a place where I need to learn stuffs like UML. Books on SAD(System Analysis and Design) seems to cover this but I am unsure about which one should I invest into.