According to Patrick Teale of Pinstripes Plus, and (partially) via Chad Jennings at Lohud, here is the list of nine Yankees minor leaguers released. The hyperlinks on each player's name sends you to their player card at milb.com

Chris Malec
Seth Fortenberry
Mike Lyon
Isaac Harrow
Julian Arballo
Griffin Bailey
Buck Afenir
Dan Miller
Paul Heidler