Nominations are invited, with reasons. I haven't got names for my three, I haven't done the research, but you get the idea.
1) Whoever had the idea of teaching children to sing "Strawberry Fair"(singing, singing, buttercups and daisies rifolrifol tolderiddleido etc)
2) Whover had the idea of teaching children to sing "Kumbayah"
3) Whoever wrote those words to "English Country Gardens"