Looking ahead to future rankings (because I'm bored), I've realized that ranks ~11-35 of $4 cards are really hard to sort. There are a bunch of good cards that are very different from one another. In this group, I have cards like: Quarry, Conspirator, Envoy, Militia, Marauder, Sacrifice, Bishop, Procession, Mission, Plaza, and Caravan (along with some other cards that share some obvious similarities to these cards). I could probably be convinced that these cards could be ranked in any arbitrary order. I don't have anything profound to say, just: keep this in mind when the next few sets of ratings are revealed. There is bound to be a lot of noise from people like me who have a hard time evaluating which of these cards are more valuable.
That said, there are some cards that I'm more confident about. Like, the $4 Villages.
IMO: Wandering Minstrel > Villa ~= Port ~= Worker's Village > Fortress ~= Plaza > Mining Village ~= Farming Village ~= Walled Village
And of the other action splitters, Throne Room and Herald are probably in between Wandering Minstrel and Port. Procession is... tricky to rank. But probably somewhere between Port and Mining Village.