Yeah I'm in search of USB hubs that have more than 4 ports, both USB-A and USB-C with USB-C upstream. I was only able to find this one: https://www.coolgear.com/product/usb-c-7-port-hub-3x-type-c-5x-type-a-din-rail-surge-protection
There's also two startech models, but they use the old bulky USB-B connector for upstream, even though they seem to come with a USB-C to USB-B cable for connection:
https://www.startech.com/Cards-Adapters/USB-3.0/Hubs/7-port-usb-c-hub~HB30C5A2CSC
https://www.startech.com/Cards-Adapters/USB-3.0/Hubs/7-port-usb-c-hub~HB30C5A2CST
If you can live with less ports, Startech has more models:
And I found a Belkin one as well: