Denise Petski Senior Managing EditorBlack-ish star and Mixed-ish creator Tracee Ellis Ross is expanding her relationship with ABC Signature, producer of the hit ABC comedy series, with a multi-year overall deal. Under the pact, Ross’ production company, Joy Mill Entertainment, will be based at the studio and produce content across all platforms.“I love sharing stories and using storytelling as a way to connect and celebrate humanity,” said Ross.