The E flat minor/major ninth chord is a 5-note chord consisting of the notes Eb, Gb, Bb, D and F.
You can see these notes highlighted in the interactive piano chart below.
The chord itself is often abbreviated as EbmM9.
Interactive piano diagram for the E flat minor/major ninth chord
Chords that are a subset of EbmM9. These contain less notes but all of them are included in EbmM9.