Founded as a distribution/production company in 2012, A24 has steadily built a reputation in the following decade or so, becoming one of the most well-respected and noteworthy distributors in recent memory, if not the most well-respected and noteworthy. A24 is sometimes viewed as more than just a company that distributes and sometimes funds interesting movies, with the sense that there even exists an "A24 style," for better or worse.
Such a reputation has developed because A24's been selective in what its name gets attached to, helping to ensure interesting, unusual, and distinctive films reach wider audiences, thanks to partnering and/or working with plenty of fiercely independent, interesting, and often young filmmakers. A24 doesn't "make" A24 films, exactly, but the company's vital in distributing and/or producing plenty of modern classics released in the past decade or so.
Taken from Collider's list