Icon names without trailing stars already exist in the freedesktop.org icon naming specification.
applications-accessories OK applications-engineering OK applications-education OK * applications-games OK applications-office OK applications-other OK *** applications-science OK applications-system OK applications-utilities OK applications-accessories OK applications-development OK applications-graphics OK applications-internet OK applications-multimedia OK preferences-desktop-peripherals OK *** preferences-desktop-personal OK preferences-system OK preferences-system-network OK *** system-help OK * suggesting this for inclusion into the icon naming specification ** not in the spec, but let's keep it out of there anyways, it's not really suited to be a standard icon *** bad naming in the spec imho, suggesting to rename this icon there, but let's use the specified name for now
Icons that are in the spec, but not yet in Oxygen's categories/ so they need to be added. Descriptions taken from the specification. (A lot of those icons already exist as package_* in apps/, they'd only need to be pulled over to here.)
preferences-desktop The icon for the "Desktop Preferences" category. preferences-other The icon for the “Other” preferences category.
Including a suggested short description text like needed for inclusion in the spec.
applications-development [In the description, change "Programming" to "Development", in accordance to the icon name and the fd.o menu spec.] applications-education The icon for the "Education" sub-menu of the Programs menu. applications-other -> applications The icon for a general applications category. preferences-other -> preferences The icon for a general preferences category. preferences-desktop-peripherals -> preferences-peripherals The icon for the "Peripherals" preferences category. preferences-desktop-personal -> preferences-personal The icon for the "Personal" preferences category. preferences-system-network -> preferences-network The icon for the "Network" preferences category.
Rationale for the renames:
"other" implies that the icon should be a generic one, and indeed applications-other and preferences-other make for a good fallback if there are categories not covered by a given theme. Also, at least KDE has no "other preferences" category, but rather a separate system settings application and a menu (with icon), both using one general settings icon for the whole set of sub-elements.
The preferences-desktop-* ones are very implementation specific, as it's not specified anywhere that the "peripherals" and "personal" preferences need to be a child element of the desktop preferences. Likewise, "network" settings don't necessarily reside in the preferences-system category in certain desktops.