Around 30 magic systems.
There were 10 orders of Knights Radient.
Kaladin is on the path to become a wind runner (the symbol for windrunners is on the cover book1 hardback, note: Szeth has almost identical powers to windrunners, but is not a windrunner because he got his powers a different (unknown) way)
Shallan is becoming one of the 2 orders of radients who can Soulcast (Name unknown, book 2 is her book)
Jasnath is believed to have the powers of the other order of knights that can soulcast (name unknown)
Dalinar is on the path to becoming a 4th order of Radient (little is known at this point, one of the books is planned to be about him).
Andolin is believed to be on the path to become a Radient (either the same as Shallan or Jasnath, or one of the 2 orders that compliment their Order) (one of the books is planned to be about him)
If i remeber to I will edit in links to the above information later.