TSMC is the other. TSMC is using its 3nm process, reportedly, while Samsung will do a 2nm as a litmus test for the process. The different versions are due to the fact that 'they translate designs to physical form differently,' CEO Elon Musk said recently. The goal is for the two to operate identically, obviously, which is a challenge. Some might remember Apple's A9 'Chipgate' saga, which found that the chips differed in performance because of different manufacturers.
The Trump administration has agreed to inject up to $150 million into xLight, a semiconductor startup developing advanced chip-making technology, marking the second time the U.S. government has taken an equity position in a private startup and further expanding a controversial strategy that has put Washington on the cap tables of American companies. The Wall Street Journal reported Monday that the Commerce Department will provide the funding to xLight