Last time my biomes did work as far as i remember, I will post the classes for you; https://pastebin.com/CrtX4ejB {jsmcWorldType}, https://pastebin.com/JYS0zwxe {jsmcGenLayerBiome}. I remember following a tutorial to achieve world generation. As for the biomes; https://pastebin.com/NyB6P1uH. And the registry for biome and dimension; https://pastebin.com/6dvSS2if {biome registry} and https://pastebin.com/6h9Vy3H4 {dimension registry}