Assuming:
* The NSA's list is primarily based on what they believe China, the EU, and Russia can't crack (with a tie-breaker of things the NSA can), and
* China's list is primarily based on what they believe the US, the EU and Russia can't crack (with a tie-breaker of things China can), and
* Russia's list is primarily based on what they believe China, the EU, and the US can't crack (with a tie-breaker of things Russia can), and
* The EU's list is primarily based on what they believe the US, China and Russia can't crack (with a tie-breaker of things that the EU can)
it seems like the right approach is to find one recommended by two different adversarial governments.