X-CUBE-LPUART does not contain any project for STM32U5.
As per application note, it says X-CUBE-LPUART supports STM32U5. I am trying to find example for LPUART Reception in LPBAM but I am not able to find any example. Cube IDE has one example but LPBAM mode configured only for transmission. For the reception it is not even initializing LPBAM application. LPBAM itself is very complicated design. No proper documentation on it.