Greek Mythology: Who Are The Eighteen Children Of Gaea/Gaia And Ouranos/Uranus, classify Them Into Their Species?

Question

In Greek mythology, who was the son of King Atreus of Mycenae and Queen Aerope, murdered by his wife Clytemnestra on his return home from the Trojan War?

Answer 1

Three Cyclopes (Sons)
Brontes, Arges and Steropes

Three Hecatonchires (Sons)
Briares, Cottus and Gyges

Titans (Sons)
Cronus, Crius, Coeus, Hyperion, Iapetus and Oceanus

Titans (Daughters)
Rhea, Phoebe, Themis, Theia, Tethys and Mnemosyne.