Putting this here for later:
A few suggestions of non-US stuff. Not being snobby, I just reckon that you’ll know the US stuff better than I. Most of them appear to be based on books.
Cadfael – medieval monk crime solver (books by Ellis Peters)
Dalziel and Pascoe – no it’s not pronounced like that
Inspector George Gently – Northern England set in the 60s
Jesse Stone (okay, this is US)
Last Detective – semi-comedy detective series. Not watched it but you may like it (I might)
Luther – Idris Elba cop on the edge. Supposed to be very good
Maigret – there are three generations of this. Paris detective. The latest stars Rowan Atkinson (Mr Bean)
Murdoch Mysteries – Not watched it in years but I quite enjoyed the early stuff
New Tricks – bunch of retired detectives go back to work. Slight comedy
Rebus – MacScottish. Gritty and good.
Silent Witness – recently gone woke but first 20 odd series might be worth a go.
Suspicions of Mr Whicher – Victorian set, slower paced.
Taggart – legendary Glasgow set series (LOTS of series of this)
Touching Evil – borderline horror mysteries
Touch of Frost – Old school detective
Van der Valk – couple of generations, one recent. UK series about an Amsterdam detective
Waking the Dead – shouty detective leads team in solving old murders
Wycliffe – Set in Cornwall (SW England. Rugged and beautiful) Slower paced mysteries
Zen – UK series about an Italian detective
I’m currently watching this Japanese show “The Man Who Won’t Get Married”.
OK so far.