Complex sentence: He currently lives in California with his mother Maria and sister Maddie, along with his uncle and aunt Mateo Santos Sr. and Hayley Vaughan Santos and his cousin, their son Lorenzo "Enzo" Santos.
Split into simpler sentences: He currently lives in California with his mother Maria and sister Maddie. As well as his uncle and aunt Mateo Santos Sr. and Hayley Vaughan Santos as well as his cousin Lorenzo "Enzo" Santos.