Conversation so far:
Who were the librettists?
CANNOTANSWER.
What did they do?
He was highly demanding and bad-tempered, unable to maintain longstanding partnerships with his librettists, with the exception of Louis de Cahusac.
How long was Louis with him?
Louis de Cahusac, who collaborated with him on several operas, including Les fetes de l'Hymen et de l'Amour (1747), Zais (1748), Nais (1749), Zoroastre (1749; revised 1756).
Were there any other notable librettists?
the librettists Rameau did work with were second-rate.

Question: What else did he do with them?
Self-contained rewrite: Aside from working with second -rate librettists, what else did Jean-Philippe Rameau do with the librettists?