Nuff said
The type of Revelation Dance always matches the user's Primary Type.
Source: https://m.bulbapedia.bulbagarden.net/wiki/Revelation_Dance_(move)#:~:text=Revelation Dance (Japanese: めざめるダンス Awakening Dance) is,a damage-dealing Normal-type move introduced in Generation VII.
So, for example if a Noivern used Revelation Dance, it would be a Flying Type Move.