Brightness Bins
Here is the output data (in emitter lumens) for various bins available (and sometimes not available; * represents the highest available bin) for various LED models:
Cree
Cree XM-L
700mA 1000mA 3000mA T5 260 359 845 T6* 280 386 910
Cree XR-E, XP-E (max bin for XP-E is R3, XR-E is R2)
350mA 1000mA P4 80.6-87.4 177-192 Q2 87.4-93.9 192-207 Q3 93.9-100 207-220 Q4 100-107 220-233 Q5 107-114 233-251 R2* 114-122 251-268 R3 122-130 268-286 R4 130-139 286-306
Cree XP-G (350mA output same as above)
350mA 1000mA 1500mA R2 114-122 285-305 380-406 R3 122-130 305-325 406-433 R4 130-139 325-348 433-463 R5 139-148 348-370 463-493 S2* 148-156 370-390 493-520
Cree MC-E
1400mA 2800mA H 280-320 490-560 J 320-370 560-648 K 370-430 648-753 M* 430-490 753-858 N 490-560 858-980
Lumileds
Lumileds Luxeon Rebel
350mA 1000mA 40 40+ 84+ 50 50+ 105+ 60 60+ 126+ 70 70+ 147+ 80 80+ 168+ 90 90+ 189+ 100* 100+ 210+ 110 110+ 231+
Luminus
Luminus SST-50
1750mA 2800mA 5000mA F 275-350 413-525 635-823 G 350-425 525-638 823-999 H 425-500 638-750 999-1175 J* 500-600 750-900 1175-1410 K 600-700 900-1050 1410-1645
Luminus SST-90
3200mA 5000mA 9000mA K 600-700 882-1029 1410-1645 L 700-850 1029-1250 1645-1998 M 850-1000 1250-1470 1998-2350 N* 1000-1200 1470-1764 2350-2820 P 1200-1450 1764-2132 2820-3408
Seoul
350mA 1000mA S1 54-60 127-141 S2 60-70 141-165 T1 70-80 165-188 T2 80-91 188-214 U1 91-100 214-235 U2* 100-109 235-256 U3 109-119 256-280
Seoul Semiconductor P7
1400mA 2800mA A 251-326 440-570 B 326-400 570-700 C 400-457 700-800 D* 457-514 800-900 E 514-629 900-1100