No, Watchers are not fairly prominent figures in WoT. The Amyrlin Seat has the title of Watcher of the Seals (an honorific since the Aes Sedai haven't had the seals for nearly 1000 years), the Watchers over the Waves got about three mentions before the Seanchan killed them for "watching for the wrong thing and forgetting what should have been remembered" and Moridin/Ishmael was referred to as the Watcher for about three or four chapters before being outed as Moridin. That's it, the only "Watchers" in WoT.
Except, of course, for Tel'aran'rhiod, which has plenty of (lower case w) watchers. And if only one of the the "Watchers" you mentioned had something "weighty" hanging around their neck, like a shawl, perhaps...? And then of course the similarity of 2 to the opening stanza of every WOT book, discussing the constant, unstoppable turning of the wheel/world.
Don't have any idea if it's WOT or not, but I don't think it can be dismissed as easily as some are trying to.