I was interested in looking at oneworld lifetime status, not that I could ever achieve any of them as it is a struggle for me to even achieve annual status. I thought the list might be of use to someone else who is a more frequent oneworld flyer.

I managed to find the following:-

Ruby
American Airlines - 1,000,000 Million Miler Miles
Qantas - 7000 Status Credits

Sapphire
American Airlines - 2,000,000 Million Miler Miles
Qantas - 14,000 Status Credits
Finnair - 3,000,000 Tier Points

Emerald
Finnair - 5,000,000 Tier Points
British Airways - 35,000 Tier Points
Iberia - 125,000 Elite Points

Does anyone know of any others that I might have missed?