Looking at forwards there is no doubt that Darius Farmer is close to the NRL and another is Juwan Compain who I think that at 18 can play NRL as early as next year.
You also have Ioane Seuili who started in the centres for the first half of the Queensland Cup but has moved to the second row for Tweed Heads in the last couple of weeks and proved that he belongs. To some degree he has gone under the radar but he has spent the entire season playing Queensland Cup at 18/19.
Other forwards potentially only a year or two away are front rower Luke Maiden, second rower Tristian Powell (playing front row in Colts) and Ben Liyou who has already been training with the NRL squad.
The players above are at the U18 and U20 level mate.