not really
don't overrate the swans, you only hear of their successes but they have plenty of misses
check out their first round draft picks from the last 15 years, or trawl through all the recycled players they have recruited and check out how many didn't make it
also rucks take a longer to mature and sydney have never been able to develop their own (except Pyke) – they buy them: Ball, Everitt, Jolly, Mumford, Seaby
Stafford the only ruck of note they've developed that i can remember