Although AbsoluteOptions doesn't provide information on certain automatic options, I would like to know all the options that are being used.
I just tried AbsoluteOptions with GeoGraphics:
AbsoluteOptions
GeoGraphics
AbsoluteOptions[ GeoGraphics[ Entity["AdministrativeDivision", {"England", "UnitedKingdom"}], GeoScaleBar -> "Kilometers"], GeoScaleBar] {GeoScaleBar -> None}
Hmmm. Whatever.
AbsoluteOptions does provide info on automatic options. Options gives you the full list of options with default values. What are you wanting that you cannot get with these two? If you provide a specific example of what you tried and what you expected, then it might be easier for us to explain and provide guidance.