They are all the same mobs. Not sure if this was intentional.
Please create a ticket on this using the SUPPORT tab to address this concern. It would be helpful as well to everyone while they are on training
The problem is you can only get 1 level so for instance if you kill a spore (what I used to do) you won’t get job level 10 instantly
I think they configured the server to no multiple levels I can confirm by using miracle medicine which in some server, it would give multiple levels, but in CGRO it only gives 1 level
They differ slightly per level:
Level 1: Lunatic, Picky, Drops, Poring, Willow
Level 2 & 3: Lunatic, Picky, Poring, Chonchon
Level 4 & 5: Lunatic, Picky, Poring, Fabre & Hornet