I'm not sure if this relates to the questions you are asked or not . . . but I will go out on a limb and make an assumption.
The guitar does not always have to mimick what the keyboard is playing, in fact, more often than not it doesnt. The guitar does not have to play the same chords or even chords at all. Single note rhythm parts are common in gospel music, as are octaves.
So if the guitar players are asking you different ways to play chords so that they can match what you are playing . . . tell them to try something different!