There are many types tbh, based on D&D engine, Turn-based RPG (multiple sub-categories), MMORPG, Action RPG, JRPG, Fantasy RPG..., Hack&Slash etc.
Even you can make two games from same gender and produce something more unique to the gameplay, for example, Legend of Mana is a very different to Diablo for example. Both being ARPG.
Nowadays games are so boring, so many animations and lacks of gameplay.
In other hand, indie games are just pixel style games (due lack of resources) claiming to be original.