I worked on 9th chords from a few weeks ago to make sure that I was still familiar with the voicings. I just went through major 9, minor 9 and dominant 9 chords on the same root note. The dominant 9 was the most difficult chord to play of all. It’s tricky to play all the notes in one hand so some YouTubers suggest spreading the notes through 2 hands or omitting the 5th.