the first recorded rap song actually comes from the US Government - maybe Education Dept or Health or Postal, in any case it was in the mid-1960's pre-dating any other claimed "first".
it was actual rap, and no one picked up on it for years
like the LdR of the first 4-5 albums but she didn't invent anything.
if you like her you should look into the great French chanteuses, who inspired her so heavily, Barbara and Edith Piaf, especially.
https://youtu.be/OFi7Ktfmz6Q?si=AdMEgR15mHstxJPN
for you