The standard grips this chord is usually shown with.
Ebmaj9 is Eb, G, Bb, D and F, a major ninth. The shape this page opens on is written x63333, lowest string first.

Also written EbM9, EbΔ9, Ebma9 or Eb major 9. The same chord either way; which spelling you meet depends on who wrote the chart.
There are 11 common shapes for Ebmaj9 on the guitar, and 45 derived voicings in 5 families.
In which keys. Every note of Ebmaj9 belongs to C minor (the ♭III), Eb major (the I), G minor (the ♭VI) and Bb major (the IV).
The common shapes, written lowest string first: x63333, x6576x, 66576x, x-8-8-8-8-10, x-x-8-10-8-10, 11-8-8-8-8-10, 11-10-12-10-11-10, 11-13-12-12-11-13, x-x-12-12-11-13, x-x-13-12-15-13, 15-13-13-15-15-13.
Shell. Root, third and seventh: the guide tones fix the quality, so the fifth is dropped. That is what leaves a string free, so pick a tension to put on top. Ebmaj9 has xx1031, x6576x, 11-10-12-10-x-x, x-x-13-12-15-13, x6x031.
Drop 2. A close-position chord with the second voice from the top lowered an octave. Sits on four adjacent strings. Ebmaj9 has xx1031, x5304x, x6576x, 11-10-12-10-x-x, 1510xx, 3637xx, xx3743, x-8-12-8-8-x.
Drop 3. The third voice from the top lowered an octave. The dropped voice becomes the bass, which is why a string is skipped. Ebmaj9 has 1x103x, x5x041, x6x763, 3x374x, x-8-x-8-8-10, 11-x-12-10-8-x, 13-x-13-12-15-x, 10-x-5-8-6-x.
Rootless. The root left to the bass player. Frees a finger for a tension. Ebmaj9 has x1303x, xx3333, xx5766, x8878x, x-x-8-10-8-10, x-10-12-10-11-x, x-x-12-12-11-13, x-x-15-15-15-15.
Open string. An open string left ringing against a fretted grip. Because it costs no finger, it sounds a note the closed shape has none left for -- a tension on top, or a pedal root underneath. Either a familiar grip with open strings added, or a shape so sparse the open strings carry the chord. These belong to their key rather than to a shape, so D, A, G and E have many and Eb a handful. Ebmaj9 has xx0066, 6x006x, 3x006x.
Tensions. A shell of Ebmaj9, root, third and seventh, leaves a string free, and the tones that belong over it are the #11 (A) and the 13 (C).
The common shapes and the derived voicings come from different places, and both are explained in where the chords and the theory come from.
Shows each chord the way this style would voice it, and marks which of its alternatives belong to the idiom.