[Harp-L] chords built on scale steps?

[Robert Hale]

THESE CHORDS
Steps 1, 4, and 5 triads are major
Steps 2, 3, and 6 are minor
(unless otherwise noted)

How can I refer to the 3 major and 3 minor chords that naturally occur in a
given Major key?
Asking another way, How may I refer to the triads built on the scale steps?
(whew!)

Does this group have a handy name?

WHY?
I am really enjoying what Spiral tuning can do with this group of six,
using string pad, flute, or choir from the Electro Harmonix Mel 9 pedal
(Melotron sounds.) I can fill the role of keyboard in many situations!

Robert Hale
Serious Honkage in Arizona
youtube.com/DUKEofWAIL
DUKEofWAIL.com