Faction tabards and supported dungeons (Wrath and retail)

[myrroddin]

I know how to add support via code for the main city faction tabards. What I don't know are the dungeons for both game versions that benefit from the tabards.

Does retail support all dungeons prior to Shadowlands? Are some dungeon difficulties not supported? Do Shadowlands dungeons grant reputation with city tabards?

Same questions for Wrath, except I vaguely remember only certain dungeons provide reputation when wearing a tabard. Plus, some dungeons provide rep up to 5999/6000 friendly in normal, but continue to exalted if you run them as heroics, and I don't remember which are those dungeons.

I tried looking up the tabards on Wowhead, looking at user comments, but didn't find conclusive answers.