Anybody who says 'I need you to...' goes on the list, even if they are not actually talking to me myself. But more seriously: Ensure people know what and why something is important, ideally by arriving at that conclusion jointly and as part of an overarching plan that everyone can feel involved in - thus requests shouldn't be a surprise, they aren't coming from you so much as from the plan (nebulous though it may be)…
Having grown up with a father that did the opposite of all of these points, I recognize that this is also good parenting advice.
When your kids are young, it matters much less and in some cases not at all. But especially as they get older, and can start to exercise reason, you should always, always explain why you are making a decision or a rule. Even if the why is "because I get too hot and I like the thermostat being low" being honest is not only going to get more compliance, but it will build trust, and your kids will learn from your example.
It really is good general life success advice.