To display additional fields in the list of contacts / companies, click on "..." in the top right corner and choose "List settings".
Next, you can drag and drop the required fields from the suggested ones in the table settings, click "Done". Optionally, you can use this kind of table for all users or just for yourself.
If you want to remove the field, drag and drop it to the list of fields in the table settings and click "Done".
You cannot remove the "Name" field from the table, if you do not have any contacts / companies, the table setting will be unavailable.You cannot display the fields of the company, only the company name in the contact list.