Some nice, smooth, consistent quality. Better Call Saul was in my opinion pretty consistent. Single season anime is almost always consistent, like My Dress-Up Darling or Terror in Resonance.
Not dragging on longer than the series needs to seems to be a key point.
Joe Pera Talks With You is an amazing show. The first season is probably the strongest season, but that's more of "This is too perfect to be improved" rather than a quality drop off. It's Adult Swim's most genuine and heartfelt show by a long mile. It's the cure for irony poisoning and insomnia. I think this show could have ran a lot longer than it did, but the finale of season 3 serves as a solid ending for Joe and Sarah.
Life & Times of Tim stays pretty fucking funny the whole time, and even improves as the show goes on. Voice acting is really good.
I'd say Death Note stays pretty consistent, definitely one of my favorite animes