Azizi, I don't recognise the original 'Wallflower' song at all. I'm in Nova Scotia. From 1972 to 2005 (with several year or two long breaks) I worked with children 3 to 12. I have heard versions of #8 and #28 from kids in the '90s, but without any 'brickwall, waterfall' lines. Sorry I can't remember verbatim.

This: "Doctor, doctor, can you tell
          What will make poor 'Lindy well?
          She is sick and 'bout to die
          That will make poor Johnnie cry."

slightly reminiscent of a skipping song, circa 1970, (sung by 9 and 10 year olds, last line indicates start of fast count skipping):

Cinderella
Dressed in yella
Went upstairs to kiss a fella
Kissed a snake
By mistake
Guess how many doctors it takes

There was another verse involving numbering babies, which I can't remember.