This is going to sound really right wing of me but movies are a traditionally left wing industry so here goes.
1. The addition of token LGBTQ characters. So often they put in a character who is not the main character and makes sure to make it clear that character is LGBTQ. Usually the character's sexual orientation has no impact on the plot of the movie.
2. Any religious Christian is quite often guaranteed to be a bad person.
I'm in favor of diverse casts. The problem is how frequently those choices then inform the narrative. As you said, an even vaguely religious person is 100% always either the bad guy, or a bad guy, that's a red herring for the real bad guy. It's just an immediate giveaway to the story.
Most of the time, in a drama/thriller, the bad guy can't be the minority, the LGBTQ character, non-wealthy person, etc. The villain will be the white guy, rich white woman, someone religious, someone rich or corporate. It saps all the mystery and drama out of the thing from the first episode.
That said, it does seem like some shows are finally coming out of this in the past year, to a realization that a real casting diversity means that anyone can be a villain, can be cowardly, can be whatever. But the last 5-6 years have been a rough period with this stuff handled ham-fistedly.
It is kind of funny how with LGBTQ token characters, that are not otherwise main players, they always drop in that extra little hint about "going home to Vanessa/Brandon" or whatever. There will be like 6 nobody characters in an office, none of which you are told anything about their relationships (because why would you need to know), but just one character that they make sure to reference a same sex relationship. That makes me laugh, because I'm always like "literally all these other people could be gay too."