@ogound Hi again,
W e’ve approved @ethersproject/signing-key & ethereumjs-abi, and both are now available.
As for the other two packages, ethereumjs-util & authereum , both are built while depending on native code or other modules that use it, which is something that our platform can’t support at this point. So for this reason they were rejected.
You can try and find other packages with similar purpose, request them in Package Manager and let us know here, and we will gladly test them out.