Train tracks in Sweden are still left-hand traffic
Like in France (excl. Alsace and Lyon metro). But which track trains use has extremely limited effects on the general public.
It's barely noticeable except when I come back from abroad and expect train doors to open on the wrong side, it happens maybe a couple of times until I get used to it again.
For trains the door side is hardly ever standard, even if the train always uses a certain track out of 2 directional ones. Some stations have center platforms, others have side platforms. Maybe there is some network in the world with only one type, but in most cases they come in a mix.
Still on escalators everywhere, if you're standing, you stand on the right. If you're passing, you pass on the left.
Everywhere as everywhere in Sweden?
I'd guess in London it's the opposite (has been a while, cannot remember).
In London on the tube escalators you stand on the right and pass on the left.
The escalators in London had signs with "please stand right" the times I've been there.
In Tokyo it's common to stand on the left and pass on the right.