Over at the International Law Reporter blog, Jacob Katz Cogan reports that:
China also submitted two nominations: Zhang Yuejiao (a law professor and former government official who was also nominated for an earlier opening) and Zhang Yuqing (an attorney and former government official). Japan has nominated Shotaro Oshima, its former ambassador and permanent representative to the international organizations in Geneva.
Here's an article about the Oshima nomination with a little background.
Some background on each of them: