Coman has played 9 league games, has never had a national cap, and has never scored.
Gotze has been on the Bundesliga team of the season twice, and has had 45 international caps, with 14 goals. He has 188 total matches, and has scored 52 times. His stats with Dortmund are stellar.
Draxler has played 140 games, scoring 21 times, including an absolutely dominant 2012-2013 year. His problem is injuries. Draxler has been capped 15 times for Germany. He has also won Bundesliga Young Player of Year.
In terms of Pedigree, Coman doesn't come close to the other two at the moment.