I don't consider myself a WIS, and I don't own any watches that a WIS would deem essential as a replica wouldn't suit the purpose: the point of a classic is the mechanics, surely.
However, historically, I would count the MoonWatch and a 1680 Sub or 1665 Sea-dweller. More recently, I would count an IWC Titanium chrono, like the Porsche, GST or Aquatimer, purely for the ground-breaking titanium design, and the fact I'm an IWC fan. I'm unconvinced a WIS would go for a modern PAM, as the older ones are where the history is, but I can see them going for the Seiko Spring Drive and an Omega Co-Axial, like the PO, unusually. And yes, maybe a Zenith El Primero, if only they made good-looking ones back in the day, instead the WIS would be more likely to get a Daytona.
So, yes, of the mass-produced available watches, it's all rolex, omega and seiko.
However, I'd bet if you asked them, they'd be all Blancpain, Breguet, etc.
Now, rephounds are different, and we need a Panerai, a Sub, a Meega and a nod to a dress watch somewhere.