Would like to know this as well. Typically my go to companies for my charging needs are Anker and Ravpower. Neither have multiport PD chargers such as you’re describing.
I did pick up a couple of Ravpower’s 61w GaN chargers to try. It works fairly well given the size so for now traveling with a couple of those seems like a decent compromise since I only ever really need two USB-C ports and can make due with a couple of A’s thereafter.