Basically, mods for generating structures have been added in this update:
- Structory_1.20.x_v1.3.5(https://modrinth.com/datapack/structory/version/1.3.5)
- Structory_Towers_1.20.x_v1.0.7(https://modrinth.com/datapack/structory-towers/version/1.0.7)
Spawn mod for hostile mobs:
- spawnanimations-v1.9.4-mc1.17x-1.20x-mod(https://modrinth.com/datapack/spawn-animations/version/1.9.4+mod)
Also added a mod for different variations of friendly skins and some evil mobs:
- moremobvariants-fabric+1.20.4-1.3.1(https://modrinth.com/mod/more-mob-variants/version/NifwSjfW)