Order to watch the DC Animated Universe
The continuity, established by crossing over common plot elements, settings, cast, and characters, was introduced in Justice League: The Flashpoint Paradox, which was released in 2013.
DC Extended Universe
This is a list of movies of the DC Animated Movie Universe.
This universe of DC Comics is inspired by the New 52 continuity, established in 2011. In 2020 it was rebooted into the Tomorrowverse.
Before Flashpoint Paradox, all of the animated DC movies were considered standalone movies, but via the new character design a shared continuity was beginning to emerge
DC Animations
Unofficial order. #16 & #17 are extras.
Everything after #17 is part of the Tomorrowverse.
Content set on DC's Earth-DCAMU
Batman animated movies in order of continuity (not year of release). The movies do not have strict continuity and can be seen in any order, but it is my understanding how they could be ordered. The list has the movies that have Batman as the protagonist and have a more adult tone or are based on comics.
They are not all, many others are left out because I think they do not work with this list, like the ones by Bruce Timm set in the series of the 60's or Batman Beyond, the ones that Batman accompanies the Justice League, Justice League Dark and Superman.
https://editorial.rottentomatoes.com/guide/dc-animated-movies-in-order
https://en.wikipedia.org/wiki/DC_Animated_Movie_Universe
Full list of the DC Animated Movie Universe (short films included)
Information from: https://en.wikipedia.org/wiki/DC_Animated_Movie_Universe
Films DC Animated
by Gimpirella