Minor 9 chords
The Minor 9 chord is easy to learn if you are familiar with the 9th Chord. The differences are that one note are lowered and you don't play on the lowest string. If we compare C9 with Cm9 the notes changes from C, D, E, and Bb to C, D, Eb and Bb.
None for the moment in this category
Notice that the shapes are exactly the same except for Bm9. That means that the chords for the most part are moveable and therefore you will easily find out how to play C#m9 /Dbm9, D#m9 /Ebm9, F#m9 /Gbm9, G#m9 /Abm9 and A#m9 /Bbm9 as well.
Bm9 could also be played as an open chord: X2022X. And we could use it in a chord progression like this one:
Bm9 Amaj7 Dmaj7