If that person on Twitter is correct, and based on their history of calling trades and signings early (like naming everything in the Burns trade before everyone else did among other things), there's a decent chance they're right that Carolina is making a serious push to get Tkachuk, then it doesn't matter what the supposed list is.
Also, there's flat out little to no chance some of those teams trade for Tkachuk. Carolina, while being concerned with the cap space, still has more cap space than Vegas and St. Louis (yes, they have a lot of connections to him; I know that's in their favor), and probably Nashville after they signed Nino. Carolina is also just a more serious cup contender than several of the teams on that list and thus makes more sense if Tkachuk wants to have a good chance at winning the cup.