This is the only complete and completely correct number classification diagram that I know of. Unsatisfied with what I found on the internet, I created it myself. The diagram has all of the following properties:

examples of each type of number, rules for each type (rational must be able to write as p/q where p and q and integers and q not equal to 0), shows the complete hierarchy (all natural numbers are whole numbers, all whole numbers are integers, all integers are rational numbers, all rational numbers are real numbers, all irrational numbers are real numbers, real numbers are all either rational or irrational, all real numbers are complex numbers, all imaginary numbers are complex numbers, not all complex numbers are purely real or purely imaginary), the symbol for each group