Some of the modern sticks have a dual lie pattern whereby half of the blade(heel portion) is almost straight, the curve starts from mid to toe and this type of stick is better(but not as good as a straight blade) at backhand shots and passes. Draisaitl uses a very similar pattern as Both Crosby and Radulov, a very slight curve, I would say as close to straight as you will see from any of the current pro players. Here is what he is using(sent link because the image I found was too big)
Leon Draisaitle Curve - Ice Hockey Equipment - ModSquadHockey
This is a Crosby pro curve, the retail P29 crosby curve is much different than what he actually uses.
Radulov curve:
All three are similar curves with slight variations tailored to each players individual preference. All three are great when it comes to the art of the backhand. Sorry about the long post, I am a geek about this stuff. I personally own 20 sticks, many of them pro stock sticks with various curves.