What are the 7 kings Shakespeare wrote about?

Here are seven kings from Shakespeare's plays:

1. King Lear from the tragedy "King Lear"

2. King Henry V from the history play "Henry V"

3. King Richard III from the history play "Richard III"

4. King Hamlet from the tragedy "Hamlet"

5. King Macbeth from the tragedy "Macbeth"

6. King Arthur from the history play "King John"

7. King Cymbeline from the romance play "Cymbeline"