Who is the oldest to youngest in R5?

The members of R5, a pop rock band, from oldest to youngest are: Riker Lynch (born November 8, 1991), Rydel Lynch (born August 9, 1993), Rocky Lynch (born November 1, 1994), Ross Lynch (born December 29, 1995) and Ellington Ratliff (born April 14, 1993).