I've gone back through Crazy and Wild to find the levels that can be done with 100% saved. The ones I've found are:
Crazy: 2, 4, 5, 6, 7, 8, 9, 12, 16, 17, 18, 20.
Wild: 1, 2, 3, 4, 6, 7, 9, 10, 11, 14, 16, 17, 19.
Crazy 18, Wild 3 and Wild 14 are very difficult to get 100% on.