These four accounts have the exact same username of "null" and were created at close times (two of them even have the same timestamp):
created Mon Nov 07 2022 00:20:23 GMT+0000
created Mon Nov 07 2022 00:21:48 GMT+0000
created Mon Nov 07 2022 00:21:48 GMT+0000
created Mon Nov 07 2022 00:22:18 GMT+0000
I'm assuming the first one is a real account, and the other three were created as a test.
There are also four more users that don't exist after that, so they could also be 4 more "null" accounts that were just deleted. There is a 3-minute gap between 's first post (Mon Nov 07 2022 00:25:36 GMT+0000) and the fourth "null" account.