I'm not sure if this was an old feature or something I'm making up in my head but I remember other's user shops used to be sortable by itemid instead of alphabetical. I can't seem to find any option for it though.

yes I remember this from the original shop/galleries.

The new shops are not sortable at all (neither by users nor shop owners).

Galleries can still be sorted by the gallery owner, but the option for visitors to sort is no longer available.

Thanks for the reply! That's actually really helpful -- it was my own shop I wanted to view sorted so I can just use a gallery instead.