yeah, C major and D dorian are the same key, both have no sharps or flats, but C is the parent key and D is the mode that is derived from that scale.
So you could say, Autumn Leaves in A minor, that would imply no sharps or flats for the key, but that doesn't tell you what modes are implied by each chord.
So modes are used to outline chords, you don't really call a blues in F mixolydian, you just say blues in F, the fact that the first chord, which is F7, is related to F mixolydian is a consideration for improvisation, not the overall key of the tune.
I hope that's making more sense.
sorry, I don't understand your second question, about the dorian chart, can you be a bit more specific and I'll try and help out, thanks! |