PS: here are some examples of relatively common types of enemies though.

[url]https://simg3.gelbooru.com//images/fc/c1/fcc17e697d0248ff9e3b5293c1dac2d8.jpg[/url]

[url]https://conversations.rabb.it/7945d62c-2235-49ab-b878-238d9ad932ba.jpg[/url]

The first ones are mostly melee attacks that come in packs, while the latter are more specialized types with well-rounded abilities that generally don't attack in large groups since they are kind of elite units.