Which bill do you pay more attention to?

None that you mention really affect your credit. What does would be where actual credit has been extended: mortgage, car loan, credit card, etc. If you ever have difficulty, these are the bills to pay first.

I pay almost my entire month’s bills in week two. Week three is alimony. Week four is the mortgage. Rinse, lather, repeat.

Never be late. Never overextend yourself. Good credit makes life much easier.