Power supplies by brand:

Cooler Master - 0.98% (1.01%)
Fortron / FSP - 0.99% (0.42%)
be quiet! - 1.15% (N/A)
Antec - 1.23% (1.17%)
Thermaltake - 1.98% (2.36%)
Corsair - 2.18% (2.30%)
Seasonic - 2.36% (2.20%)

 

Power supplies by model:

Corsair Gaming Series GS600 - 3.64%
Corsair CX500 V2 - 3.59%
Corsair CX600 V2 - 3.59%
FSP (Fortron) HEXA 500 - 3.39%
Seasonic S12II-520 - 3.31%