OnePlus originally introduced the 7T Pro McLaren Edition in the absence of US availability or pricing. However, T-Mobile has just announced that it is to stock this phone in the country. Moreover, this carrier's version will support 5G.
https://www.notebookcheck.net/The-OnePlus-7T-Pro-McLaren-Edition-is-coming-to-the-US-after-all-with-5G.440374.0.html