The question is who were or are these (as Clay Travis puts it) four horsemen of the apocalypse? I saw some threads that said they are former great leaders of Westeros (Targaryan).
From what I read and have heard, we were actually dealing with three different types of "people". The skeletons/zombies with no blue eyes were death walkers (according to an HBO leak). These are the kind of people who attacked Bran last season. The wights are the dead who are re-animated with blue eyes, like the woman who got destroyed by kids the worst case of cooties ever (VACCINATE YOUR CHILDREN!), The white walkers are those full white bodied creatures with the horses and custom armor and weapons.
PS- I was praying for a white walker giant.
PPS- I was convinced that the shady hooded figure rowing the boat was a white walker who was going to get them
PPPS-I was convinced that the white walker preacher telling the white walker congregation to rise was going to freeze the sea allowing the "massacre" to continue.