Above QR Platinum, is VVIP.
This is reserved for Royal Family members, Sheikh/Sheikhas, and heavy customers.
While I know a few VVIPs, the only 'regular customer' have ever met, flies weekly DOH-LHR-DOH and DOH-India-DOH in F and J respectively. He has done so for the past 4 years, so one can only imagine his annual spend!
M