Now, as we can see from the list, being on the list does not assure you that you will be an all-time great (DeJuan Blair, Greg Monroe, John Drew). But there are some great players on the list.
If KAT can raise his game a little in the second half (say .200 WS/48 and 4 more WS) then he'd have a top 5 rookie-under-20 season in both categories for his age group.
KAT has had a Game Score of 9 or better in 31 of 46 games, and if you search for player with consistently good Game Scores (greater than 15, greater than 20) you will see KAT's name next to players like Andre Drummond, Dwight Howard, Dwyane Wade, Klay Thompson, and Al Horford.
Based upon WS and WS/48, KAT is a borderline contender for the all-star game (having about the 33rd best overall season to date). Guys with the most similar 2015-16 seasons thus far:
Al Horford, Greg Monroe, Dirk Nowitski, Kemba Walker, Damian Lillard