CellGroupingRules is an option for cells that specifies the rules used for grouping a cell.
CellLabelPositioning is an option for cells that specifies where the label for a cell is positioned.
ColorSelectorSettings -> {opt -> val} is a global option that specifies settings for the Color dialog box.
CounterStyleMenuListing is an option for cells that specifies what counter styles are listed in the Counter popup menu of the Create Automatic Numbering Object dialog box.
DefaultNaturalLanguage is an option for character selections that specifies the language used when checking the spelling of a word in a human natural language selection.
DelimiterMatching is an option for selections that specifies whether an opening delimiter will match only its respective closing delimiter or any closing delimiter.
EditCellTagsSettings -> {opt_1 -> val_1, opt_2 -> val_2} is a global option that specifies settings for the Edit Cell Tags dialog box.
ExcludePods is an option to WolframAlpha that specifies pod IDs to exclude from the results.
ExponentPosition is an option for RadicalBox that specifies the placement of the index outside a radical sign.
ExportAutoReplacements is an option for cells that specifies which replacement rules Mathematica automatically applies when exporting text.