So 2 of these probably aren't even codes, just gibberish.
So what if false positives are created? We can just brute-force the analysis of those to find the right one. Are you forgetting the sheer magnitude of quantum, digital, & human-analog computing power we have available today?
Another is probably written in an invented, private language.
Two others are short enough that brute force approaches will almost certainly create false positives.
In general, brute force can only work if you have some idea of what to expect the clear text to look like.