Why is this an opinion poll????????????, very bizarre. I think you should delete the thread, if that is possible, and start again.
As nobody else has said anything I will have a go. I am no expert so no guarantees on accuracy, just a little common sense.
A. NO, the Reanault one has the wrong PDC which means it will not even fit on the hub studs. All the technical specs of our A2 wheels are in the the first post of the definitive wheel/tyre thread
https://www.a2oc.net/community/index.php?threads/the-definitive-tyre-wheel-size-thread.12120/
I suggest you take note.
B. The Polo space saver. My guess is probably yes it fits, after a quick bit of research on 6R0601027N all the technical specs match except the ET which is slightly high. If this is critical I have not got the expertise to say.
C. The A2 wheel fits!!!! Three points.
1. The fact the number of spokes differ is immaterial, it only has to get you home and to a tyre place next day, just aesthetic. In the long term I suppose a slight possible difference in wheel weights might be somehow detrimental but
certainly not in short term with matching tyre size.
2. I assume you have the spare wheel boot false floor. It will fit apparently, but a very tight squeeze.
3. If you are happy to have a full size tyre as spare why not buy to match what wheels you have got!!!!!!!
Hope this helps.
Andy