That "list" is a song database of many, many years of work on the part of Dick Greenhaus and Susan of the DT, long before the Mudcat even came into being. Not every song which gets listed on Mudcat makes it into the DT; it's up to Dick and Susan what gets included.
Also, IF you have already posted a song/rhyme/whatever elsewhere on Mudcat, save the space and just post a link.