Sara Ramirez, Shay Mitchell, Darren Criss

To see diverse representations of lesbian, gay or bisexual people on TV, tune into ABC Family.

The cable network received an "Excellent" rating from the Gay & Lesbian Alliance Against Defamation (GLAAD) for its fifth annual Network Responsibility Index that was released Wednesday. The report tracks the quantity, quality and diversity of LGBT people on prime-time programming on the five broadcast networks and on 10 major cable networks.

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Of ABC Family's 103 hours of original prime-time programming, 55 percent included LGBT-inclusive images. Last year, MTV received the first-ever "Excellent" rating.

"As television audiences get to know our community and the common ground that we all share on the screen and in their own lives, acceptance is growing," says Mike Thompson, acting president of GLAAD. "Inclusive programming is a hit with critics and audiences alike who cheered for Kurt and Blaine's romance on Glee or watched the wedding of Callie and Arizona on Grey's Anatomy." 

"Programs like Pretty Little Liars and Greek have woven gay, lesbian, and bisexual characters into their stories in a way that mirrors the diversity of our community and the experiences of younger generations," adds Herndon Graddick, senior director of programs at GLAAD. "Viewers expect to see television environments that accurately reflect what it's like to be a young adult and today -- that includes young adults who happen to be gay."

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Among the broadcast networks, The CW is tops with 33 percent LGBT-inclusive programming, followed by Fox (29 percent) and ABC (23 percent). Bringing up the rear is CBS with only 10 percent of LGBT-inclusive programming, receiving an "Adequate" this year, up from its "Failing" score last year.

Among the cable networks, ABC Family is followed by Showtime (37 percent), TNT (33 percent), HBO (31 percent), Lifetime (31 percent), AMC (29 percent), and Syfy (22 percent), which all received "Good" ratings. Like CBS, USA jumped from "Failing" to "Adequate" after upping its LGBT-friendly hours from 4 to 18. Failing cable networks were A&E and TBS.

The transgender community is underrepresented across all networks, with no regular or recurring transgender characters on any networks tracked.

Check the GLAAD site for the full NRI report.