https://bugzilla.redhat.com/rh-bugzilla-beta3/queryhelp.cgi has a number of out-of-date comments, or references to Mozilla bugzilla which could be to RH bugzilla instead. It could do with some updating. Will try to attach some kind of potentially helpful list.
This has been mildly updated with our statuses, resolutions, severities, priorities, etc. Other symlinks will likely stay the way they are since they point to more useful information that what RH currently maintains.
Oh the new link is https://bugzilla.redhat.com/rh-bugzilla-rc2/queryhelp.cgi