Qantas
Qantas status is earned on Status Credits over a 12-month membership year, with a minimum number of Qantas-flown sectors, on Qantas, Jetstar and oneworld carriers. Qantas is a oneworld founder, so Gold is Sapphire and Platinum and above are Emerald. Confirm current thresholds on qantas.com.
6 rungs, from the bottom up.
Qualification thresholds are the published ones as last checked and change most years; confirm the current numbers with Qantas. Alliance equivalences and the lounge rules that follow from them move far more slowly.