Italy and Finland are the only two countries in Europe that have auctioned mmWave frequencies. The rest of the Europe isn't planning to auction mmWave until the next several years.
Despite the noise around mmWave, the most popular frequency for deployment for carriers are the Sub-6/mid-band ones, particularly 3.5GHz. Because of a combination of speed, range, and its ability to actually penetrate structures.
You have to understand the U.S. lacks the valuable mid-band frequencies, which is why they've turned to mmWave as an alternative. It's not a desirable frequency unless you are for example, in a factory with hundreds of 5G production equipment.