I have hardly used the zipfile module, but here are my thoughts on some of the exceptions anyway :)

Some of these exceptions are documented, so the documentation would need updating.

BadZipFile for corrupted field seems reasonable.

The purpose of RuntimeError is not clearly documented, but I have the feeling it gets used mainly for programmer errors, rather than errors caused by external data. So I tend to agree a couple of the changes away from RuntimeError, such as the invalid password case.

For programmer errors, I doubt the exception type matters much for compatibility. RuntimeError seems fine to me, but I accept that ValueError is more consistent with open(..., mode="invalid"), operations on closed files, etc.