USB Hub
Best USB-C 3.0 hub
Ok. After 2 hours research, the best USB 3.0 hub seems to be LENTION 4-in-1 USB-C Hub with Type C, USB 3.0 Buy at amazon
You want shielded cable. Else, it screws wireless devices.
Best powered USB 3.0 hub
Best powered USB hub is

bought it in 2018-06-15. Works great.
I have a Mac mini. 4 USB ports. 1 for keyboard, 1 mouse, 1 keypad, and just 1 left. So, to record a video, need 1 for cam, 1 for headset. Not enough.
Anker 4-Port USB 3.0 Hub
2021-07-03 Bought this. For my Microsoft Surface Pro 4, 2015

Magnetic USB connector
Bought a magnetic USB connector. Works great.