What is your level of proficiency with UML diagrams (ER, Sequence, State)?

I am confident in working with the main types of UML diagrams, including ER diagrams for data modeling, Sequence diagrams for describing object interactions over time, and State diagrams for displaying the states of a system or object. For example, ER diagrams help structure the database by showing relationships between entities, Sequence diagrams visualize the order of method calls in a process, and State diagrams describe the state transitions of an object depending on events.