Who invented the root word Foli?

"Foli" isn't an independently invented word. It's a Latin root meaning "leaf" or "leaves." Like many other Latin roots, it has been used for centuries to create new words in various languages, including English.

Therefore, pinpointing a single "inventor" is impossible. Instead, it's more accurate to say that "Foli" is an ancient Latin root that has been used in word formation for centuries.