The NFL Market consistently values QB, is trending towards increasing value to WR, and possibly fading in the RB department. Which position in the NFL is severely undervalued from a financial standpoint?

Title is pretty self explanatory. I am curious from redditors with a better economic sense, when it comes to value and availability of other positions and what is not being given the financial value it justly deserves. This could incorporate many factors, the influence of the position on the outcome of the game, the disparity of alternative talent at the position, and even the expected longevity of the position (RB versus QB for example).