HBO Max (see also HBO)
(launched in 2020; rebranded as Max in 2023)
IMDb; official website; TV Tropes; Wikipedia

The streaming service includes all of HBO's content, plus a bunch of other stuff, including some original content.

stuff I want to see:

Doom Patrol (season 3-4.0; s1-2 on DC Universe, s4.5 on Max)
Harley Quinn (season 3; s1-2 on DC Universe, s4 on Max)
Infinity Train (season 3-4; s1-2 on Cartoon Network)
Peacemaker (season 1; s2 on Max)
Superintelligence (film)
Titans (season 3-4; s1-2 on DC Universe)
The Witches (film)
Young Justice (season 4; s1-2 aired on Cartoon Network, s3 on DC Universe)