Here’s an overview of the diatonic chords of C major as shell voicings. This set has the chord (3rd and 7th) on the middle strings since these are the most common and the most useful register when using these chords for comping.
I have made 2 lessons on how to use them in a jazz context:
You can also download the chart as a pdf here: Major Shell voicings
If you have any questions feel free to get in touch with me!