Well, no mafia zombies, or otherwise undead members of the mob, please. As I've indicated.
If you look at what I've liked over the past few years — I can't really see any common denominator. The Leftovers, Man in the High Castle, Breaking Bad, The Expanse, His Dark Materials, Better Call Saul. Peaky Blinders further back. Likewise Westworld (first two seasons — that one fell off a cliff). Oh and Band of Brothers (which my son has in a boxed set) which was really quite impressive.
What's it on? If it's Netflix I don't have a subscription (and don't know the weird and wonderful ways of getting onto it). Don't have access to BBC iPlayer (even with VPN, which they've sussed out now — they know when you're not really where you say you are). It's a pity cos I sometimes see things I quite fancy.