As far as baby metal songs this is by far the best one in my opinion that dance during the chorus is so damn catchy!
I think you also picked the worse Perfume songs, magic of love is pretty good but is way better on the album mix, and i really cant say anything good about sweet refrain it is a B side at best for me.
Clockwork and 1mm as you added are some of the best they released this year.
Was also quite disappointed by the new kyary song...but Nakata does have the ability to fix any song in the album mix so i wouldn't condemn that song comletly as it has its good parts.
Haven't heard that GG song yet it is damn catchy!