Korobov looks a dead cert to reach the very top if he keeps progressing the way he is. Not sure about the 2nd one, from what i've seen Danny Jacobs looks like a possible future champ.
I wouldn't class either Ortiz or Juanma as prospects. One is a world champion, one whom I'm having difficulty seeing loose in the next few years. The other is bordering on his first world title. If Khan beat Kotelnik (possible with heatbutts and corrupt referring) then Ortiz will be champion very soon as Khan would **** HIS PANTS and RUN at the thought of facing Ortiz.