Thanks for adding this. Had a quick test and what stood out was that it is case sensitive; a-z comes after A-Z. Should probably be case insensitive?

I think that's @NiLuJe's cue. xD

(See https://en.wikipedia.org/wiki/Natural_sort_order for some background.)

Case insensitive (actually depends on the default global DALPHA_SORT_CASE_INSENSITIVE that is truthy).

I think that's @NiLuJe's cue. xD

:D

IIRC, we do have a natsort-ish variant in the FM sorting hat, and while that usually didn't really matter in SortWidget, the one example being shown here (e.g., Collections) might be the one where it... does ;).

we do have a natsort-ish variant in the FM sorting hat

Exactly, let's reuse it:

Wouldn’t it be better to have just two choices (a to z and natural sort) and a reverse sorting option? It would be more in-line with the way it works on file browser.

(As well as file managers in general.)

In fact, why not just have the natural sorting one? (Same for the other file manager/browser)

Performance. The dumb one is significantly faster.

Wouldn’t it be better to have just two choices (a to z and natural sort) and a reverse sorting option?

It's a one-time operation, not a long-lasting setting like in FM.
I press one button and get the result.