Does anyone have a copy/link to the policies for NTPs on each oneworld carrier?

Was thinking about this too as I reckon with my current travel and CC spending I'd earn around 5k NTPs/year. So if I wanted to retain Silver I'd need to find 2.5k more.

Though almost certainly won't be actually following through and doing this since BA clearly don't want my (albeit small) custom. More just academic and out of interest.