Procgen (and I mean roguelike style procgen, not Elite/Frontier single fixed seed generation) AND graphics like these were pretty rare back then, best to my knowledge. There's a number of classic games that Roguecraft draws on visually, notably HeroQuest, but also, as you say, Cadaver, Shadowlands, and some others. There were also a good few near-roguelike games (DarkSpyre springs to mind...), and of course ports of the major RLs (ADOM, Moria, bands, hacks, etc.), but I think RogueCraft is the only game to hit this balance between high (for the system) visuals and roguelike gameplay.
https://www.amigalove.com/viewtopic.php?f=8&t=1308