Order of Packs with addon
Make sure you have The Extra Details Add-on Above Better Endermen
Lush Endermen with Extra Details Addon
Requires the Extra Details Addon
Lush Endermen
Spawn in Lush Caves
Normal Endermen
Spawn in The End
Better Endermen
How to get the Addon
Extra Details Add-On, Un-zip "Better Endermen.zip" open the Un-Zipped Folder, then once you're in there open "ADDONS" then drag and drop the Addon into your resource pack folder, when using the packs MAKE SURE the Addon is located above the main pack
Chorus Endermen
Spawn in End Highlands
Swamp Endermen
Spawn in Swamps and Mangrove Swamps
Overworld Endermen
Spawn in The Overworld