Photoreal : ORBX True Earth (no shader add-ons)
Tested using ActiveSky and ORBX TEGB (photoreal).
NOTE: There are substantial differences in lighting between default XP scenery and photoreal (eg. ORBX TEGB), so the preset comes in two variations – basically the same preset, but with tweaked brightness and saturation Photoreal->Standard:
Native : Generic XP11 scenery (no shader add-ons)