IIRC, just before "miniB" actually hit; there was a lot of confusion and efforts to make something like it. Olympus and Fuji both had a USBC looking wingless connector on some USB cables, they'd used the same connector, but wired it differently.

I was selling cables and adapters on ebay at the time and we had a package with both types. Easier to sell people both versions than deal with "oops i needed the other one."

(I may well have mis-named the parties; apologies if so)