Using the /maplist or /map info <map> commands you can get info about the maps, but some of them have missing information.
Edhellond doesn't list which heroes are playable on that map.
Moria, Osgilitath and Edhellond do not have lore the maps set.
Some maps also have some of the heroes kits available for show in their respective team lobbies on certain maps. An inconsistency is that it shows Gimli available on Helms Deep, while the map info of that map does not include Gimli as an available hero.
Edhellond doesn't list which heroes are playable on that map.
Moria, Osgilitath and Edhellond do not have lore the maps set.
Some maps also have some of the heroes kits available for show in their respective team lobbies on certain maps. An inconsistency is that it shows Gimli available on Helms Deep, while the map info of that map does not include Gimli as an available hero.