Let's get to that A14 straight away—and some of the chips around it.

Apple A14 SoC layered over 6 GB of Samsung K3UHCHC0MM-VGCL RAM

Apple 343S00437 power management IC

Possibly an STMicroelectronics wireless power receiver

Possibly an Apple/Cirrus Logic audio codec

Apple 338S00564-B0 power management IC

Apple/Cirrus Logic 338S00537 mono audio amplifier

Apple 338S00616, likely a display power management IC