All of my top picks have been mentioned, but I have a few more that stand out from recent memory.
Hijack (Apple TV+) was one of my favorite thrillers, perfectly wrapped up in one season. Multiple jaw-dropping moments. Very hard to put down.
Perry Mason (HBO) is an enigmatic murder mystery that will keep you guessing. Characters are written with depth. Feels realistic for the time period.
Watchmen (HBO) is a faithful continuation of the comic book that, like the book, uses superheros to explore ethical and social issues instead of drawing clean lines between good and evil. Also responsible for teaching many Americans about the Tulsa Massacre.