Some of the SEC filings :
Allkem called "Anaconda"
Livent called "Lion"
Lighting-A called "TopCo"
https://www.sec.gov/Archives/edgar/data/1742924/000095010323007112/dp193610_ex0201.htm
https://www.sec.gov/ix?doc=/Archives/edgar/data/1742924/000095010323007112/dp193610_8k.htm
Transcript :
https://www.sec.gov/Archives/edgar/data/1742924/000095010323007118/dp193633_425-merger.htm