What Animated Series Are Must-Sees for Adult Audiences?

I'm looking to expand my watchlist with animated series that are more geared towards adults, similar to shows like "Bojack Horseman" or "Rick and Morty." What are some hidden gems or cult favorites that you think deserve more attention? Any recommendations would be appreciated!

If you liked "Bojack Horseman" and "Rick and Morty," you should definitely check out "Tuca & Bertie." It's got that same blend of humor and heart, plus some really unique animation. Another one I'd recommend is "Paradise PD" if you're in the mood for something way more outrageous. It's definitely not for everyone, but it has its moments.

Also, if you're into something a bit darker, give "Midnight Gospel" a shot. It mixes deep philosophical conversations with surreal visuals, which is a wild ride! Anyone else got hidden gems to share?