Pretty much the title says it. For grouping, add a section with ranked maps, one with loved maps, and one with maps that are neither ranked or loved. And for the sorting, sort it so that way the most recently ranked/loved maps are at the top. If you're example using this on difficulty grouping, ranked maps appear at the top, then loved, then the maps that are neither ranked or loved.
And perhaps add it as a supporter perk, like Rank Achieved?
And perhaps add it as a supporter perk, like Rank Achieved?