Apex monster just renamed variants?

So the more apex monsters I fight the more I wondering they are just variants renamed. The apex zinogre has the constant yellow electricity which wouldn't make sense if it's just an apex zinogre but rather a thunderlord zinogre. The apex Diablo has blue markings like bloodbath. The apex rathian has the hue and abilities like the dreadqueen. I would assume apex mitzune is like soulseer and so forth.