Matthews' shot is a runaway favourite. One of the few players in the modern NHL who can beat goalies clean from far out. Much of that is in the incredible release, but his accuracy and velocity are also fantastic. Add in his ability to corral pucks, IQ, and nose for the net, and you've got one of the league's premier goal scorers. 50 goals isn't out of the question for this year.
Nylander has the velocity and a great release, but doesn't have the accuracy or the willingness to shoot that Matthews does. It's not Matt Frattin levels of "miss the net by 6 inches and exactly 6 inches every time", but if he can go bar down a little bit more often he has the velocity and release to be a 30g man every year. But Willy is so darn cerebral, he's always looking for Matthews because he knows he's the better shooter. My biggest wish for Nylander this year is to up his selfishness factor a little bit, he's able to create so much but goes one pass too far a little too often. When he gives himself the green light he's lethal.
Don't know about Tavares that much tbh. I think of him as a player who uses his size and skill to drive the net and finish in close, rather than beating goalies from a distance with release and velocity/accuracy.