Any way to check if the mobs are naturally spawning?

[Dantich-sfg]

Hi! Quick question - installed the mod alongside huge list of mods (mostly world generation, bioms, etc) I was wondering if it's possible to somehow check if, for e.g. Orcs are actually spawning? Been playing on a server with friends, and haven't seen any of the mobs naturally yet. Spawning mobs and bosses in creative through eggs/rituals works.