For my macbook pro is searched and found on Amazon a great mag adapter tradename Upmely for about $ 20
Has strong magnet, and IF one picks a usb cable carefully, does not block adjacent port.
Magnetic USB C Adapter,Type C Connector, USB 3.1 10 Gb/s PD,100W Quick Charge - 4 K @ 60 Hz High Resolution - Supports High Speed, Compatible with MacBook Pro/Pixelbook/Matebook (Gray)
[Brand: Upmely]
And it works in both directions with with a green light on outside to show charging/use
Have only used it for charging