Baseball America has an interesting article up, highlighting various minor league players who have strong analytical markers that are indicators of future success.
The background into this exercise that BA provides is also informative — as they explain:
Hitting, while arguably one of the hardest tasks in all of professional sports, is fairly simple on its face. Do you hit the ball? Do you hit the ball hard? Do you walk/swing at strikes? With that information we can get a fairly clear foundational understanding of who a hitter is.
When we talk about the analytic data that teams are using in evaluating players, we are for the most part talking about data that provides information about one or more of those three questions.