C-141A
Empty weight: 136,462 lb (61,898 kg)
Max takeoff weight: 316,608 lb (143,610 kg)

C-141B (lengthened version)
Empty weight: 144,492 lb (65,542 kg)
Max takeoff weight: 342,100 lb (147,000 kg)

Il-76D
Empty weight: 159,000 lb (72,000 kg)
Max takeoff weight: 346,000 lb (157,000 kg)

CL-99
Max takeoff weight: ~400,000 lb (~182,000 kg)

C-17
Empty weight: 282,500 lb (128,100 kg)
Max takeoff weight: 585,000 lb (265,350 kg)

CL-99 = C-141B with larger diameter fuselage.