Human Mob

[Endemerrin]

Bandits are normal spawns as well. So are zombies, which are "humanoid". There's plenty around, they're just lurking in out-of-the-way places for the most part.

A lot of quests also incorporate humanoid enemies, as does the R45+ dungeon.

Plus, since 1.18 there is a world event that takes place periodically north of Camp Tranquility in The Black Shroud and Camp Horizon in Thanalan involving wave after wave of Imperial soldiers that you need to fend off as they assault the regions. You queue up for it like a behest, and obtain you can obtain deaspected crystals as a reward at the end of the waves.