Mr Robot - only watched the first 1.5 series because Prime paywalled it but absolutely loved every minute of what I did watch. Fast paced, dramatic, lots of twists. I love the style that the viewer is someone the protagonist talks to, and it tackles several mental health topics amongst a kind-of technological/financial dystopia. Just overall really cool.
Close seconds are Supernatural, The Flash, Teen Wolf, things like that
Dinnerladies- Very funny, great actors, jst a legendary show in general. Shame they only made 2 series. Keeping up appearances- Great characters/plot, funny, just a generally great show.
Yellowjackets - absolutely amazing show with deep well-written characters, lots of horror elements mixed with emotional moments and it really shows the impact of trauma as well as being wildly entertaining.