You are picky, aren't you? I've looked through my Audible library to see if I can find anything that fits the bill to recommend to you.
Can't help at all on the family saga stuff, but on not too gory character driven crime, I really like the Three Pines books by Louise Penny. They're set in Canada, usually in winter, so good for this time of year. Veers into cosy crime territory but not cloyingly so.
A Rising Man by Abir Mukherjee, set in Calcutta just after the first world war also well worth a listen.
A little bit more literary, I loved His Bloody Project by Graeme Macrae Burnet - more of a why he dunnit, rather than who, but really good stuff. Booker Prize shortlisted so you can feel improved as well as entertained and engaged.
The only thing is I'm not sure of the length, but fwiw, there's a series of Louise Penny books set in the same milieu so you can just get two! There are also two Abir Mukherjee books too. So, you might have got me on a technicality, but I see it as thinking outside the box...
What's more, scrolling through my Audible list revealed lots of promising forgotten stuff I have yet to listen to. Too much media, not enough time.