Type 1 is stuff that are inconsequential to the major fun or balance to the game or events that would only happen once in the campaign.As far as I'm concerned 1 and 2 here are the same thing; as in my view a "quick ruling" should set a binding precedent for the remainder of that campaign. If it doesn't, and the ruling can change from week to week, that's where trust in the DM will very quickly go out the window.
Which is why even "quick rulings" should be thought through and got right the first time, even if it means stopping a session for ten minutes and thinking/talking it over.
I've been kitbashing and houseruling for decades. Some changes work, some don't, so what? Trial and error.
Type 2 is stuff you would have to stop and think about before creating and might temporarily create a Type 1 rule until to figure out a proper Type 2 rule.