Currently, Status of the Case list view to get proper visibility. This functionality is one of the must have in Lightning Experience but doesn't support formula fields with images in List Views.
Status Column with Image
Formula Text field
IF(Status = "New", IMAGE("resource/statusIcon", "New"), "Closed")
Above formula works fine with Classic Interface but not for Lightning.
In lightning, it will displaying image Text("New") on list view.
Your help will be highly appreciated.
Thanks in advance!