The sixth diatonic scale, also referred to as a minor scale:

The seventh diatonic scale, and the least harmonically stable:

The second diatonic scale, which is a minor scale with a #6:

The fifth diatonic scale, which is a major scale with a b7:

The modes are named after

The third diatonic scale, which is a minor scale with a b2.

The fourth diatonic scale, which is a major scale with a #4

The seven diatonic modes encompass all of music, and all music exists within these seven scales.

G Lydian and C Major are relative scales.

D Dorian and C Major are relative scales.

B Locrian and A Major are relative scales.

Which scale is relative to G Major?

Parallel scales are scales that start and end on the same note, but have opposite tonalities.

Every modal scale has both a major and minor scale that are relative.