Some positive feedback:
• I updated to Kotlin 1.9.20 for my shared module and android app, and iOS and no issues!
• I also tested enabling the K2 compiler, and it too was able to build everything (including my shared XCFramework).
• Compose MP (iOS only for the moment) is working great.
• Would still love compose mp to have a watchOS target included, since I have to edit out compose to build a watchOS only XCFramework.