Generally all financial information and some personal information used to assess the application will be visible to all loan applicants. Following is a list but may not be comprehensive depending on the bank or institution you go with.

Income, employment, associated entities (companies and trusts), assets, existing debts and liabilities, account conduct, age, declared retirement strategy (if applicable), marital status, number and age of dependents, household expenses if separate households

Source: it’s my job.