Complex sentence: The themes of his vases for the most part stick to a few specific genres, specifically, Greek Mythology, domestic themes (including sacrifices and parades), and paintings of warriors.
Split into simpler sentences: The themes of his vases for the most part stick to a few specific genres. While there are a few exceptions, the majority of the themes are either Greek Mythology, domestic themes (to include sacrifices and parades), and paintings of warriors.