In an analogy ":" means "is to" and "::" means "as/like". Now, since this is almost an analogy (maybe a future type), I will accept the solution if it's almost correct.
Kinberg : ‴niɘɈƨnɘƨiƎ‴ :: ?
Since there is clearly no third word, we need to reconsider what the :, :: notations really mean.
In the centre of the concept, there are numbers.
Mr.Kinberg is mainly a producer but sometimes he directs. Mr.Eisenstein is a movie maker too, but sometimes he is not.
Consider what a:b means if a,b are numbers. Also, something spelled backwards will result in a different something of its kind. Moreover any of the possible three anagrams (permutations) is of the same kind. From here on, you choose one of the three and then just let things happen to you!