Thank you for your help, much appreciated.
It seems that the ESP32-S3FHR2 has the Flash integrated into the package, but the crystal is not. I concluded this by finding some reference designs that use this device & they had to add an external crystal.
I ended up selecting the ESP32-S3-PICO-1, which ...

Hello, I am planning on moving to ESP32-S3FH4R2, from ESP32-PICO-D4 due to extra GPIOs. Does the ESP32-S3FH4R2 have internal 40MHz crystal similar to the ESP32-PICO-D4, or do I need to install one? Thanks.