Because my info about rootless chords got removed on that other thread, here' s recap of the chord voicings recognized on Yamaha, Technics, Ketron, and Korg arrangers, but regretably not on Roland arragers.

Chord Recognition Modes: a1 fingered or Full Keyboard with LH voice assigned to a Piano/Organ voice and activated (sounding).

Select an 'acoustic jazz' style that includes walking bass.
Mute all auto accomp. "piano/organ" parts.

LH voicings

II -V - I Chord Progressions

A voicings:

F1-C2-E2: Dm7(9)
F1-B1-E2: G7(13)
E1-A1-D2: C6(9)

B voicings:

F1-G1-Bb1-D2: Gm7
E1-Bb1-D2: C7(9)
E1-F1-A1-C2: Fmaj7

* These are of course recognized in all 12 keys as well.