Although not stated on the white label, the mixes actually have names which where registered with MCPS on release.
These are the official names:
Dreamdance: Mix 1 = Full Mix, Mix 2 = Trance Mix, Mix 3= Vocal Mix, Mix 4= Instrumental
Gonna Be Mine: Mix 1 = Full Mix, Mix 2 = Instrumental Mix, Mix 3 = Hard Mix.
There are two further mixes which were not on the 12" release but were released on the Krono-Log 1 album:
Dreamdance KL Mix
Gonna Be Mine KL Mix
The 2020 digital reissues and CD reissue from eurowave.digital include all the mixes with their correct titles and PPL codes.