These would work similar to how the monthly ranking charts work, except that I gain points on the "Double Time Chart" whenever I complete a map with Double Time enabled. As usual, it would only take the highest "Double Time" score I achieved per map set for ranked score, while accuracy/play count/etc would count all difficulties. The same would be true of "Hidden" and "Flashlight" for their own charts (Hard Rock is too similar to normal play and probably shouldn't have a chart).
Completing a map with two mods would contribute points to both charts.
Completing a map with two mods would contribute points to both charts.