Under Appreciated Jazz Piano Players

Here's another one, sparked by seeing the name Kenny Drew - Kenny Drew, Jr. (the son) has a phenomenal technique and plays interesting material.

Good lists, guys. I'll include another "baker's dozen" that deserve wider recognition (unfortunately, about half of them are now deceased):
1. Roland Hanna
2. Tommy Flanagan
3. Michel Petrucciani
4. Jimmy Rowles
5. Erroll Garner
6. Marian McPartland
7. Chucho Valdez
8. Michel Camilo
9. John Hicks
10. Barry Harris
11. Cedar Walton
12. Kenny Drew
13. Gene Harris

John Coates, Jr.
Enrico Pieranunzi
Richie Beirach
Bill Charlap
Chris Anderson
Larry Willis
Bill Mays
Jessica Williams
John Taylor

McCoy Tyner underappreciated? I suppose you could say he is so phenomenal that any appreciation is not enough (could say the same for Bill Evans or Keith Jarrett) but McCoy is generally regarded as among the top three or four pianists in jazz. Same comments on a lower scale for Silver, Garland, Kelly, Rubalcaba and Jamal. All very renowned, and deservedly so.

Here are some of my picks (limited to living pianists), off the top of my head:

Jessica Williams
Benny Green
John Hicks
Geoff Keezer
John Campbell
Dave McKenna
Lynne Arriale
John Taylor
David Hazeltine

Gonzala Rubalcaba
Marian McPartland
Hampton Hawes
John Lewis
Carla Bley