The ones I read regularly are from India and most of HNers might not have heard about the.
Caravan (www.caravanmagazine.in) - pretty good long form pieces. Then there's a Hindi literary magazine - Hans (https://www.hanshindimagazine.in - it's a Hindi website with an option to translate the links I reckon). And, Fountain Ink - http://fountainink.in. They usually pick very interesting subjects, subjects that other media establishments either miss or just give less than a cursory look.
Just like books, I never had any success with e-newspapers and e-magazines. Distraction is just one worry. Though I manage to read some long form articles on the web every month or so.