I agree, but I also think they take analytics into consideration (at least far more today than before). There is also the human aspect to this, such that if Mike Tomlin approaches Omar Khan (or his predecessor) and says "I want Najee Harris. Loved what he brought to the table at Bama, love his life story, his attitude, and his production, and think he's the player we need to take us to the next level" then there's a high likelihood the coach is going to get what he wants. At least the GM is not likely to say "feck off, our analytics guy is telling me there's better historical value of drafting a guy in round 6". Therefore, if a coach is sold on a player, they're likely to pursue them irrespective of what their received draft rating is, which would make sense given most mock drafts are nonsense anyway.