Lastly...if you don't mind CRJ could you explain Porcaro's influence? I'm kinda a noob lol
Probably the most important session man in rock after the three above him, I don't know a single modern drummer in the genre today that wasn't influenced by him in some way. You could say the whole sound of pop/rock drumming throughout the whole 80's to late 90's is attributed directly to Porcaro's sound. He was the most in demand and respected session drummer till the early-mid 90's and played on hundreds of tracks, possibly thousands. Here's just some of who he played with: Besides his work with Toto, he also performed as a session musician with artists such as Paul McCartney, Dire Straits, Willy DeVille, Jackson Browne, Donald Fagen, Steely Dan, Rickie Lee Jones, Michael Jackson, Go West, Nik Kershaw, Love and Money, Paul Simon, Don Henley, Madonna, Airplay, Al Jarreau, George Benson, the Manhattan Transfer, America, Peter Frampton, the Bee Gees, Tom Scott, Michael McDonald, Amy Holland, Joe Cocker, Stan Getz, Sérgio Mendes, Lee Ritenour, Christopher Cross, James Newton-Howard, Timothy B. Schmit, Joe Walsh, Jim Messina, Poco, Exile, the Four Tops, Barbra Streisand, Diana Ross, Natalie Cole, Les Dudek, Warren Zevon, Bonnie Raitt, David Gilmour, Roger Waters, Pink Floyd, Roger Hodgson, Paul Anka, Eric Carmen, Eric Clapton, Miles Davis, Bruce Springsteen, Elton John, Tommy Bolin, Larry Carlton, Mari Iijima and Seals & Crofts.
these are just a very small selection of names of who he played with I copypasted from wikipedia, but you can find the endless list of who he played for, you'd be looking at hundreds of albums and artists though.
He also played on MJ's thriller album specifically, which MJ also wrote songs for him after his death, MJ wanted him more than any other drummer, along with Macca and many other artists at the time.
You could say he played on nearly all the biggest pop/rock albums of the 80's, or at least on a good amount of them. He was also very skilled and innovative, made lots of grooves and shuffle's as well as expanding upon previous drummers techniques.