REQUIRES BIOMES O' PLENTY AND BLUEPRINT!!! WORKS ONLY ON FORGE
The Biomes o' Plenty mod recently received an update for version 1.20.1, which brought all elements from later versions, including End biomes and corresponding blocks... however, the generation of these biomes was removed.
This datapack simply restores the generation of End biomes using Abnormals' Blueprint.
The appearance of the biomes has minor differences compared to the original, but they are very similar overall. The main difference lies in their spawn frequency - if this doesn't suit you, you can change the parameters in the file \data\icycaeli\blueprint\modded_biome_slices by editing the weight value.
Terrablender for version 1.20.1 doesn't support End biomes, which is why Abnormals' Blueprint is used. Overall, everything is quite clear and simple.
Compatibility? This datapack should work with any End mods or datapacks immediately after installation.