Hey guys what do you call those half human half fading into a mob skins? Like the one ItzRealMe has

I am looking for skins like those but I don’t know what they are called and what to search for as well as if you guys could recommend some websites to find those skins on I know about skindex, McPedl and skinMC but are there any other ones? (Oh and I am on bedrock if that info is of any use) thx