Adding another port will require two separate voltages to be output as well, making the adapter more complicated, but sure there are adapters like that. My Comkia adapter (as mentioned here Dimensions of and markings on included AC adapter?) is very similar in size to the Philips one and does have one USB-A port in addition to the USB-C PD port. That has been my travel charger of choice, but it only provides up to 3A output at the 15V level, so not quite up to the Philips adapter power.