Insurance - A, B, C s

This article very good on explanation on insurance. What type of insurance?

I have all the four.

Medical - AIA
Life - Great Eastern
Savings - AIA

Weath Protection-Insurance Planning,  - Me dah ada, not sure enough or not
Wealth Accumulation-Retirement & education planning, - Now accumulate through share market and property(not yet start) 
Wealth Preservation-Tax Planning (not much to plan) 
Wealth Distribution-Will & Trust. (not much to give)