[pzb]

Cypress has a chip out for this: https://www.cypress.com/products/ez-usb-hx3pd-usb-31-gen-2-h...

It has one USB Type-C in with 3 USB Type-C out plus 4 USB Standard-A out. One of the C outputs supports downstream charging. Should just be a matter of time until hubs using this chip are widely available.