Kevin Ryan at 8
Dick Thornett at 6
Ray Price at 7
Phil Hawthorne or Arthur Summons at 10
Trevor Allen at 12
Michael O'Connor at 13 and so on...........
This is a pretty stupid thread, frankly. We might just as well have a thread talking about AFL or soccer players who could have played rugby, and quite a few (particularly AFL players), would have been sensational - somebody like Leigh Matthews, for example - I would have him before some of the league players listed above. And Alex Jesaulenko actually was a very good rugby player.
Nowadays, if a player wants a professional career in rugby, and is good enough, there is plenty of room, here, and in other countries. Players who prefer league are probably in the right game for them. Will Chambers, for example, is a star, comparatively speaking, in league. Jarrod Saffy had a couple of seasons in the NRL, and was a regular starter in a premiership winning side. Lote Tuqiri puts his walking stick away every weekend, and hobbles to the ground.
Two different games, frankly, with a similar name, and a few similarities, but many, many differences.