Babe Ruth, Ted Williams, Yaz, Pedro, in that order.
For living, Yaz, Bonds, Rose, and Gibson or Seaver. Can't decide which of the last two, but definitely one of them.
Four is teh wrong number though, I mean I get why you chose it, but this is baseball--everything comes in 3's and/or 9's!
On Nolan Ryan: Best stuff ever, period, end of story, the first half of his career, finally learned how to pitch late in his career when his stuff was great, instead of impossible. His stuff was literally too good to control the first part of his career. Wins have one from overrated to underrated, but good lord did he play on some shitty teams, that has to be taken into account with him too.