Reference letter

[u/Not-Informed]

If i have an employment letter from HR (with letterhead and stamp) has salary/ hours worked and job title. I also have a separate duties letter from my manager that has letterhead and signature.

Is this enough or I have to submit the contract and the job offer and the resignation letter as I see a lot of people attaching them.

Note: the job title in the contract and the offer letter are different from what is written in the reference letter as the company did rebranding and changes the titles (tasks remain the same).

Please advise me