The jazz diagrams are allowing some embellishments, you could try the pop ones if you don’t want that. In BiaB jazz, C6 and CMaj7 are considered similar chords for lots of things. For example, the styles, which is why you’re often seeing maj7 voicings on a C6 chord. The pop and country ones don’t do that. This is all by design.

If you’re interested in Freddie 4 in the voicings, forget about the chord diagrams and look at the tab below the notation, or just watch the on screen guitar. And for jazz, when the chord is C6, expect jazz musicians (and BiaB) to take liberties with it and play extensions like C69 , CMaj9 etc.
If you want more exact voicings, choose pop diagrams. If you want open string “campfire” voicings, choose Folk.


Have Fun!
Peter Gannon
PG Music Inc.