Ok....apart from the chords, touches, and progressions I notice based on my 2 cents experience
that all guys play songs differently. Some guys even with a few chords know how to economize and end up sounding better than guys with a more extended chord vocabulary. Let's take a simple ...well I call it simple but how do you play it? Let's try Marvin Sapp's "Never could have made it". I believe the progression I hear is
CMaj 7, B half dim, E dom 7 (I use a E 7 aug 9th here, or jus' plain ole E aug 7th), A min 9th, D min 9th or D dom 7th (9), F/g, F/A, G/B then repeat the sequence. Easy to play for the experienced musician if you ask me:)
Back in the day all I knew how to do was place melody on top and move parallel to the melody with inversions (choir parts:(. Although some gospel styles or songs still require this, this style blends nicely with a more jazzy style that harmonizes.
My personal likings for certain voicings are for example the ones with a 7th or third on the bottom. So on the B half dim it would be A D F from bottom to top, followed by Ab D G (all in the right hand for the B to E chord). Of course D min 9th is F A C E or C EF A in RH. The left hand basically plays the entire chord voicing or roots with roots in octaves, fifths or 7ths. In jazz, the left hand has the potential to do whatever the rh does providing one knows how:)
That's basically my style. I have heard some more jazzier voicings that some of you may want to share.