I don't see much of the Nautilus, but certainly there is something of the classic original Royal Oak in there. If you're going to base a watch off any other, then a Gerald Genta design is probably your best bet.

The original Royal Oak, mind, not any of the hideous-dialled RO Offshore monstrosities. Some of the current ROs are still quite nice, as far as I'm concerned - it helps the chronos have a 3-6-9 configuration, whereas I think the Offshores are all 6-9-12s (with an in-house/JlC movement rather than a 7750 but still the layout remains).

The only think I really like about ROOs is the finish on the forged carbon case models. Try to ignore the horrible dial on this one and tell me you don't think the case finish looks technical and interesting:

I'm not so keen on any of the modern Nautiluses (Nautili?), particularly not the chronos with their 3-in-1 how do I read it dials. Not all that keen on any Pateks really, except perhaps the Calatrava because I like the shape of its case (in large part because it reminds me of a Heuer case to be honest!).

I think the watch world is probably pretty in-bred and lots of watches take their influences from all over. Playing spot the influence can be quite fun, there is very little new under the sun...