NFL Draft analysis: What does recent history tell us about this year's prospects on offense?

Better late than never, contra Zach Berman's college journalism professor.
For the last few years, we've undergone the exercise of corralling the best players in the NFL, breaking them into position and searching for commonalities in their physical and production backgrounds to see if there are trends at play that could inform the prospects of this year's draft class.
Mostly, it's a helpful reflection of when the best players are drafted at each position and an indicator of some ways in which the league tends to be inefficient. There have been 399 different players to earn initial Pro Bowl or first-team All-Pro status over the past 12 years. Here's how everything breaks out.

Some things...