We can't add a "description" to list items in a list view.

Could you please make it possible to add a "description" to the list view that is similar to the issue search list?

Workaround

You can consider using custom fields of the type Paragraph to display the desired data. In such case you could use an Automation rule to keep the custom field updated (reflecting the value contained in the Description field).

1. Create a custom field of the type Paragraph
   
2. Build an Automation rule that will copy the value from the Description field into the custom field you created. This is a sample one I created: Copy Description.json

• Reference on how to import rules: Import and export Jira automation rules
• The rule will most likely require the field to be on the screen

One limitation of that workaround is that currently the List view does not render special formatting. So the custom field will be rendered in plain text:

• There is a Feature request for that behaviour: List view should handle special text formatting