new enderman types/base variants

New enderman variants like a ghost type enderman that, looks like a base form enderman but, when hit, deals no damage and passes through. an aggressive type enderman or some kind of enderman thats more like a guard post, or one that's more poisonous, perhaps due to a new ore. another variant is one that could perch onto blocks, i.e. like climbing, with a perched animation, but they can't climb like spiders, they'd just stay in one place and then more easily able to teleport to different places. These variants would have a greater percentage of showing up in the end outer islands than the overworld or nether, but also for the main end island, have the greatest percentage, perhaps the aggressive ender man variant even has a color change of the eyes briefly or for a short while to signify their aggressive state. perhaps theirs even a behavior with the dragon, changing eye color as well briefly. This could add some flare to the boss fight but also add a bit more mystique to the end, while not compromising on any of the mystery, lore, or introducing any set story.