I want the one that when you touch, it feels the most like an acoustic piano.
As mentioned, none will feel quite like an acoustic piano. What's closest? Hard to say. First, different acoustic pianos, themselves, feel different from each other, so you have a somewhat variable target. Second, one digital may feel more like a given acoustic in one respect but less in another.
For example, I tried a Kawai MP10 a while back which, on the whole, I would give relatively high marks for feeling like an acoustic piano, but it is closest to an acoustic with a heavy action. If you were comparing it to an acoustic with a lighter action, you might say it didn't feel much like it at all. Around the same time, I tried a Yamaha CP5... arguably less acoustic-piano-like (for example it uses a non-graded action, so low and high keys feel the same instead of low keys feeling heavier than high keys), but if you were used to an acoustic with a lighter feel, the CP5 would come closer overall than the MP10.
Nord Stage 2
Yamaha YDP 163
First, I noticed they're all "slab" style except the YDP-163. If you prefer the slab, you can get something similar to that model in a slab format in the Yamaha P-255 which I believe incorporates the same action and piano sound.
From Nord, I agree with the comment that the "Nord Piano" 2-88 feels a bit more like a piano than the Nord Stage 2-88. There's also a Nord Piano 3 which is supposed to be even better, though I haven't had a chance to try that one yet. Also, the Nord Stage 2 was replaced by the nearly identical Nord Stage 2EX which was then replaced by the slightly different Nord Stage 3.
Out of your list, the one that feels least authentic is probably the P115.
Although I haven't played one, from reports here, the Kawai MP11 should also be on your list. Also Yamaha CP4, which is generally considered to have a better action than any of the Yamahas mentioned above.
Casio gives you perhaps the best action for the money, but if money is not the limiting factor, I think other actions are better.
In current slab models, with a somewhat flexible budget, my inclination would be to audition the Kawai MP11, Nord Piano 3, Roland FP90, and Yamaha CP4. Also maybe the Korg Grandstage. Even though it uses Korg's RH3 action which is generally considered merely adequate, I have read where some people feel it seems to work really well on that particular model.