* The Mystery of Edwin Drood (2012): This movie adaptation of the Dickens novel was his feature film debut.
* Teen Beach Movie (2013): A Disney Channel original movie that made him a teen idol.
* Teen Beach 2 (2015): The sequel to Teen Beach Movie.
* My Friend Dahmer (2017): A biographical drama about the teenage years of serial killer Jeffrey Dahmer, where Ross plays the titular role.
* Status Update (2018): A comedy about a teenager who accidentally gains superpowers.
* The Re-Education of Frankie (2021): A comedy about a man who gets sent to a "re-education camp" after posting a controversial video online.
This is just a selection, and he's been in several other projects as well. You can find a full list of his filmography on websites like IMDb.