A user over at the Cadillac Forums has captured the first Charging Session with a Lyriq at a 350 kW EA Station. @Domenick The conditions were not ideal and they didn't get a full battery precondition down before charging but it's still good info. Thread can be found here: https://www.cadillacforums.com/threads/charge-curve-discussion.1128772
As much as GM bragged on its battery, I sure would like to see a much more linear charging curve. Color me not impressed.