Though there are other DC characters being worked on, as @TachyonTele@lemm.ee mentioned, the number of poorly received Batman-adjacent projects in past 5 years is astounding:
Suicide Squad: Kill the Justice League video game
Gotham Knights video game
Gotham Knights series
Titans series (the first two seasons were heavily marketed as being Batman-adjacent. I stopped watching after the second season, so I am not sure about the rest.)
Joker: Folie à Deux movie
The Flash movie (same as Titans, marketed heavily as being Batman-adjacent)
A couple of forgettable animation movies like the super-pets one.
The only good Batman-adjacent project in recent times which I can recall is The Penguin.
Though there are other DC characters being worked on, as @TachyonTele@lemm.ee mentioned, the number of poorly received Batman-adjacent projects in past 5 years is astounding:
The only good Batman-adjacent project in recent times which I can recall is The Penguin.