Version: Quark-r2.1-225
Log:
latest.log
Config:
quark-common.txt
(renamed from .toml to .txt so that Github accepts it)

I disabled both the mobs module, and all mobs within it - but I still see the following entities spawned in my world shortly after world generation:
quark:crab
quark:stoneling
quark:toretoise

(The crabs are visible on the beach, the other mobs I see using my MCWorldInspector tool which parses the .mca files of the world save)

But this only checks the module - not the individual mobs?