Minecraft wiki entry for Starting_in_the_Nether, associated text: Piglins and hoglins spawn here. Hoglins drop porkchops, an epic food source.
Piglins can be bartered with (or rather offerred gold to see what they'll give you). This gives you arrows, obsidian, crying obsidian (for respawn anchor), and fire resistance potions, as well as iron nuggets which can be crafted into iron tools.