CC0 (the public domain declaration). This allows for government-community-government roundtripping where the government releases its works into the public domain (e.g. the United States of America).
CC BY with strong moral rights (the Creative Commons Attribution 3.0 Australia licence). This allows for government-community-government roundtripping where the government releases its works under CC BY (e.g. Australia).
CC BY-SA (share alike). Anyone who inadvertently built upon “Share Alike” contributions will also have their changes reversed. Essentially, CC BY only retains your moral rights and right of attribution.
Use of the public domain and CC0 give away even those rights. In both cases, commercial innovation is automatically permitted from your work.
All in all, Anything that has conversation with money, you should be careful!