Out of all of those, number 1 I think is the worst. Sure premades and lopsided matches suck, but that kind of game you can at least attempt to carry your team. With good leadership and the right calls, you can still win if you communicate.
Having someone afk though is just an instant loss and there is nothing you can do.
I had a ranked recently where we all talked, picked our roles, had a good team comp, and then our ap mid went afk.
We all said "**** it" and tried anyways, and it ended up being a REALLY close game. In the end, we couldn't pull it off with only 4 versus competent players. I think 1 should be a priority in your list.