Minor gods is just a less broad term of immortal, describing the gods not as well known or respected. There are many of them, such as Pan, the satyr of nature, Phobos, the god of fear, or Marusu, the god of the northern winds. There are also Asclepius, Chaos, Dione, Erinyes - Furies, Eris, Eros, Ether or Aether, Fates - Moirae, Gaia, Charites - The Graces, The Muses, Nemesis, Nyx, a nymph, Persephone, Thanatos, Ouranos - Uranus.