I couldn't possibly answer this, but I will say that when I'm scouting players to draft, your highest ceiling players are what I like to call "scheme diverse."
Now scheme diverse doesn't exactly say who has the most impact on this particular defense, but it could tell you who the best overall player is based on how many positions they could play even in a different schemes of defenses. Who can play in a standard 4-3 or even an Over? Who could play in a 3-4? Cover 2 heavy? Single high press man? 2 deep man?
And again, you're still stuck with choosing between Wags, Kam, Sherm, and ET. A good case could be made for any of them.
Could Wags play any of the LBs spots? Fairly easily, yes.
Could Kam play FS and/or cover a slot? The SB and loads of other games where he's deep say yes.
Could ET play SS and or cover a slot? Many games absolutely say yes whether they are robber or other coverages although I'd wonder about durability.
Can Sherm play on both sides of the field in man or in zone? Has done so this year, yes.
Personally, I'm not going to worry about a luxury like this.