Another popular sound is the 7sus chord. It is similar to a dominant 7th chord, except that the 3rd of the chord is replaced by the 4th. Here are some fingerings for it and some examples demonstrating its use.
E7sus
E7sus
E7sus
Here are a couple more chords you may find useful. They are slightly unusual, but are very colourful sounds. The minor 13th shape does not contain the root note. The second is called a b5 chord even though it contains both flat 5 and naturalS. You may have heard this chord used by Prince. Listen to the examples below for ideas on how to use them.
Em13
Em13
Here are some rhythm parts using a mixture of chords and single notes with slurs.