I agree on the bottom two (common war notes)
The Japanese Government 5 pesos note is also common. They were printed for the invasion of the Philippines during WW2 as a substitute currency, and are very common (worth less than a dollar each)
Anything from the Confederacy can be searched on-line by serial number. You will find the vast majority are fakes, advertising pieces, etc. That probably includes the South Carolina note. Not all copies are marked "copy" like your first one.

The 5 cruzieros from Brazil looks to be in good shape, but I believe I have seen those in the bargain bins. It's worth looking into more.