Romance/relationships games focus on companion and NPC personal lives or relationship management. This typically involves mending or improving poor relationships, improving how others see you, and even sometimes allowing the player to romance NPCs.
Omegaverse / A/B/O
Abbreviation for alpha/beta/omega is speculative erotic fiction wherein some people have defined biological roles based on a hierarchical system. Males can also get pregnant.
Aliens or "sentient" people with bodies that are very different to humans. Teratophilia may be used for explicitly non-humanoids, and Xeno for humanoids that are expressly not human.