Diablo 2 is the closest. It's considered the hallmark of the entire genre and all subsequent games like Path of Exile and everything else are based on Diablo 2 only. It also has an awesome lore and captures the horrors perfectly. Diablo 3 on the other hand - is a massive step down. It's cartoony and not horror at all. It was also marked by Blizzard's excessive greed - due to which they took bad decisions, but some of those has been reversed later (Like for example - the Black Money Auction House (BMAH)). Good Gear drops were made extremely rare in the game, and even the good gear you get was more than likely to belong to another class. This was done to "encourage trading" (This was removed later, because it was literally killing the game and franchise). Even the lore was bad - you were an uber- powerful "Nephilim" (Son of angel and devil) whom entire Heaven and Hell were afraid of, because the union made you so awesome. No horror and extremely cartoony graphics and game.
Go for Diablo 2 Resurrected (Remaster of Diablo 2). It's a slower game, and more gear dependent as compared to D3, and might have poorer textures and graphics than D3 (It's a remaster of an old game, not a remake) - but the gameplay style is completely different between all the classes, and the lore and story is absolutely awesome.