Is there an error at QR website lounge access overview? If you go to manage your booking there is a "Book lounge access" button on the right side. This brings me to an overview of my both DOH flights and the Qatar Business, Qatar First and AM lounge.
I'm traveling business (with QR for the first time) and have no special status - but it shows at Qatar First Class Lounge "Included. You are eligible to access this lounge for FREE". I think I don't have access there?
//edit:
Found this thread:
Transit DOH - flying Business - F Lounge access?
Not an answer why it shows "Included" (cause I'm not BA Gold), but tells me first class lounge is not better as AM lounge.