I practically like every ambient genre you named and whenever there is some quality release, I enjoy in it as much as possible. I agree with Time Trap of not including the essence of old school ambient music : Brian Eno, Robert Rich, Steve Roach, Brian Lustmord, Pete Namlook, Geir Jenssen, Tetsu Innoue, Bill Laswell and the likes... But from your list I have to choose Old School - Goambient genre
Favourites from that genre :
Transwave - Ulysses Pt.III
Shakta - Earthrise
Cosmosis - Afterglow
MFG - Metamorphosis
Total Eclipse - 51 Pegasus
Astral Projection - Ambient Galaxy
SUN Project - Deeper And Deeper
Man With No Name - Azymuth
Dimension 5 - Mind To Mind
Celtic Cross - Kathmandu
X-Dream - Relax Vortex
M-Sphere - Serum X
Jaia - After The Rain
SUN Project - Solitude
Chi-A.D - Tranquilicy
Dimension 5 - Flow
Prana - Geomantik
Chi-A.D - Creator
Tarsis - Broken
Ra - To Sirius