Only people I can add to these already awesome lists would be:
Shaun Martin (Myron Butler, K. Franklin, K. Burrell; great all around musician from piano sounds to keyboard sounds with all styles)
Bobby Sparks (K. Franklin longtime musician; great synth work)
Jimane Nelson (Myron Butler; great phrasing and musical sentences)
Quennell Gaskins (new Myron Williams CD)
Keyboard player on the new R. Dillard CD, great stride piano
Buddy Strong (organist for Israel, but played keys on a few of Marvin Sapp's new songs from Thirsty)
Rick Robinson (Vashawn Mitchell)
Asaph Ward (great chord movements)
Derrieux Edgecombe (gospel)
Chick Corea's Solo piano album from 2000
Maurice Rodgers (awesome phrasing)
Keith Jarrett (great emotion in playing)
Marcus Johnson
Eldar Djangirov (young jazz piano player with great technique)
Miche Garland Waller (John P. Kee)
McCoy Tyner (jazz)