Both pencils have the same functions.
As a company, we work closely with various suppliers to offer our customers the best possible price. The price difference here is because we source the pencils from two different suppliers.
There are two adapters included. Both connect the pen to a charging cable. One for Lightning to Lightning, one for USB-C to Lightning. In each case socket to socket. Charging directly on the iPad is only possible with the Lightning socket. I haven't tried out whether you can charge the stylus on the iPad with the USB-C to USB-C charging cable and the adapter, as I still have a 9th generation device.