Right I can't be bothered going through this in too much detail as after more thought I'm not sure it's particularly relevant, but anyway, just doing an eyeball check here's the ones that look to be one of a kind songs in this years contest...
Czechs
Belgium
Andorra
Norway...just.
Spain and Russia if only for the boy band/girl band thing.
Germany
Latvia
Mmmm and the Swiss perhaps...altho most of the elements in both are in other songs too.
It's a tricky distinction to make...take Denmark for instance(Drama Queen song.) On the face of it nothing similar to any other, but drag act - Ukraine and poss Sweden have it(guy looks a bit funny), euro disco Cyprus, Bulgaria etc etc, big costumes, plenty have them...so nothing unique there, altho the package is perhaps(no pun intended!)
All the songs above are either no hopers or drivel anyway so let's just consign it to the
TDP bin.