Hello,
1. Go to Views in order to create an override view of the product/listing_div, around line 70, you have this code :
=> Modify the value of the variable :
$cookie_value = 'display_grid'; for
$cookie_value = 'display_list';
This will make the list display type
by default.
2. Here, the tricky points, the list create by the display switcher is different because of the html that allow just with command css to
switch from div display to list display.
And so, this is therefore necessarily a different display.
If you want replicate this listing type, the first answer (about list display by default) will help you to reproduce for
all item menu to have by default the switcher list view (and if the table switcher is enable).
Maybe if you want, you can hide via custom css the switcher button, (see this documentation to see how to proceed) and add this kind of pseudo css command :
.hikashop_switcher_btn_class {display: none;}
Hope this will meet your expectations.
Regards