How long ago did you find it on the other 2? It may have taken a little longer to show up on TU. Do the dispute like the others & it should be deleted. Who knows where this stuff comes from! That's why it's good to pay attention to your CR's...just like you're doing!
I know this morning I had a bad Sallie Mae acct finally get removed from EX & EQ...TU hasn't shown it yet, so they're a bit behind on my report too.
BK 7 discharge 06.24.2020 No Fico score at all.