So often you get to these charts and figures and they could be bothered to explain anything. What is 'total money' vs. 'hard money' vs. 'outside money' and why

So often you get to these charts and figures and they could be bothered to explain anything. What is 'total money' vs. 'hard money' vs. 'outside money' and why don't they bother to explain it. Edit: the answer is here [1] Hard Money is direct political contributions to campaigns, registered etc. Outside is to supporting activities, other PACs [1] https://www.opensecrets.org/dark-money/basics https://www.opensecrets.org/dark-money/basics