Can you let me know how many types of diabetes are there and what are there differences?

Type 1..: Most common type 1 requires Insulin to live type 2 can often be controlled with diet, exercise pills;sometimes need Insulin for better control, but won't die if no Insulin like type 1, unless very poorly controlled also gestational diabetes- for hyperglycemia that comes during pregnancy and stress diabetes that comes with stressful situations others too rare to comment on.