Titans, which followed a teen superhero team, had several queer characters, including trans actor Chella Man as Deathstroke's bisexual son Jericho. It also featured lesbian villain Mercy Graves.
In the latest season, Tim Drake joined the cast of Titans, and so did someone very close to him from the comics. In 2021, Tim Drake's Robin came out in the comics, asking out his friend Bernard. In season 4 of Titans, Bernard and Tim are both a part of the show.
Doom Patrol also had several queer characters, including some of the main team. Larry Trainor, a.k.a. Negative Man, is played by Matt Bomer and is a gay man in the series. Crazy Jane, another team member played by Diane Guerrero, is a lesbian. Many side characters are also queer.
Prolific gay producer and creator Greg Berlanti was one of the producers behind both shows.
The shows ending isn't exactly a surprise, as DC Entertainment is going in a new direction following the announcement that James Gunn and Peter Safran are now taking over and creating a new slate of films and TV.
Both Titans and Doom Patrol have already released the first half of their fourth-season episodes. The second (and final) halves will return later this year on HBO Max.