A bit of trivia that some of you might or might not know: Anceint Greek theorists called our Ionian mode "Lydian". Their diatonic scales counted *downward* by the same intervals ours uses upward; so our Phrygian was their root-mode, so to speak; they called it Dorian. It was indeed _ _^_ _ _^ ....starting from the top.
D to D, what we call Dorian, was Phrygian... C to C, Lydian B to B, Mixolydian A to A, Hypodorian G to G, Hypophrygian F to F, Hypolydian. Crazy.