The OnePlus 7 Pro's 5G variant may be coming to the US soon. The carrier Sprint has announced that its next device that will support the next-gen bands will be from this OEM. Its phones have also been available through T-Mobile in the past.
https://www.notebookcheck.net/Sprint-hints-it-will-start-stocking-the-OnePlus-7-Pro-5G-soon.428793.0.html