OK, but I am a frontender....this could be tricky for me.
I have tested this in buildrow() function.
$row['field_custom']['data']= [
'#field_custom' => $entity->label(),
];
I suppose I have to pick upp data first somehow.
I know about hooks in theming but not in modules I am afraid.
Just looking for a snippet...
I did a dirty hack in the NodeOrderListBuilder.php on row 127.
$paged_query->limit(300);
Then the table shows maximum 300 nodes.
My suggestion is a setting for this.
I the pager is active it is hard to sort nodes between the pages. Specially for a client.
Hmm.. This is not work for me at all. Can't find any setting for language at all. Nothing for default language in the view and no language setting in the search api. My index result view shows the nodes and it's translated version.
I have Search api 8.x-1.29 and Search api Autocomplete 8.x-1.7 No Solr module just internal Search Database.
A solution is to have one view for each language, but that is a messy solution I think.