I grow a few varieties and found these good last year...
Runner beans -Scarlet Empire and Painted Lady both good croppers.
French beans - Goldfield, Neckaronigon, Neckargold Barlotto Linua Di Fuoco and a purple podded one but can't remember what it was called. Picked early they were all good on taste and not stringy. Some cropped better than others and having coloured pods made them easier to see on the plant to pick..
This year, the runner beans haven't started producing pods yet and French have been slow, I only started picking them last week.
I'm trying three new one's this year. two varieties to dry the beans, but none are doing well.