Here are the chip ID submissions we've received to date. What else can you find?

STMicroelectronics STM32L496QG 32-bit Arm microcontroller

Apple 343S00404, likely a Bluetooth SoC

This is probably the H1 chip rumored to be on each side of the headset.

Winbond W25Q256JW 256 Mb serial flash memory

Cirrus Logic CS46L10A0, likely an audio codec

Cirrus Logic CS44L22, likely a 1-Ch. audio amplifier

Texas Instruments SN2501, likely a battery charger IC