Just ordered a 4-pack of USB-C to Micro B sync cables https://www.amazon.com.au/gp/product/B07BW62QD6/ref=ohauidetailpageo00s00?ie=UTF8&psc=1 for my Mac’s backup drives: I have three external drives with a Micro B (micro USB 3) interface used with the MacBook Pro & one for the iMac 4k.
I’ve been using the standard USB 3 cables with cheap USB-C to USB-A adaptors but they’re tiny & too easy to lose.