So far, definitively, just the Beijing video. No one's made that much of LK-99. So far, best I can tell, there's a few small flakes here and there that seem to have the correct atomic configuration. Whether that specific material is actually a superconductor is also, to my knowledge, up in the air. But, it is still a possibility.

From everything I've been reading, it's supposed to take longer to say for sure there's definitely not any room temperature superconductor here. Whereas, an easy positive outcome could have been shown much more quickly. There's supposed to still be a narrow path for a very specific atomic configuration to pass the tests, and until that has for sure been tested one way or the other, and the atomic configuration confirmed, it's undecided.