Apple Insider posted IOGear USB-C Compact Docking Station Review
A quote from the article:
The IOGear USB-C Compact Docking Station with Power Delivery Pass-Thru is intended for USB 3.1 generation 1 Type-C gear like the MacBook. Given the Thunderbolt 3 spec, it can also be used on the 2016 and 2017 MacBook Pro, and the 2017 iMac line.IOGear USB-C Compact Docking Station Review @ Apple Insider
We tested it on a 2016 and 2017 MacBook Pro, a 2016 MacBook, and briefly, a 2017 20-inch 4K iMac.