Level icons are a bit confusing for Compounds. There are 2 types of monsters. Minies and enemies in "grassy" portions of the level are based on level's subname (Ravenous Warrens for Beasts, Creeping Colony for Slimes and Chittering Burrows for Undead). Enemies in "factory" portions of the level are based on the level icon's color.

From what I can see on your screenshot, you probably met mostly Slimes and Gremlins, without status.