[Frodo]

From what I know or searched:

One stripe white belt (1)
Ronin Rug.

Blue (77):
Afrofeet, Anaconda, Balto, Big Eck, Big_One, Bighead, Cardio King, Chris H, Christian Medina, CodeMonkey76, Cojofl, ColClaypool, Dokstarr, El_Jefe, Elliotedge, Evaristo Medrano, FLMikeATT, Farnsworth, Fencer, Flameboy, ItsArun, Justleaning, Mikey Triangles, Ninjamurf, Ongy, Oshime2, RGJJ_matt, Sambo234, Samurai Jack, Sasquatch, Sean-Roberts, ShanghaiBJJ, SouthBayBJJ, Sub Dude, The Colonel, TimG133, Triton, ahcshon, alphamale, armbarking, bjjbryce, blanko, brollikk, crazyasian, cockysprinter, danielr, fatu, frank21, genkisudo69, gothlink, gshock38, infamous mattyd, johil d'o, joshv5.0, jota, kaboom187, kid dynamite, laquintofox, laz0001, legomydiego, lockjaw211, ltjcrew06, petersonka, pittfrog, rrspicer, ruecifur, sanuces, sproggdawg, strange619, tf, tjsix, tucker713, tudor_bjj, ultimajiujitsu, vitor3000, wOg, yodaman.

Purple (29):
350 lbs fist, Aesopian, Andre00, Andre00, BCarr, Calibur, Cash Bill 52, Delbjj, Eric Castile, GZUS, Ghost Dog, Guardgame, Guardpasser, Laboss, Luther, Petegrrr, Resendiz, Sherdog_Mutt, TJS, Zankou, batman69, cockslap, hamoom, jjmuaythaiguy, johil d'o, kimurense, kneecompression, whipyourasstyle, and me.

Brown (10):
-Montanha-, ARIS, Brian McLaughlin, Crowbarr, Jeff Rockwell, Ybot, hayliks, hocky, jaysculls, ****tronics.

Black (3):
Asel1, Dave_Jacobs, Lobo.

I know there are more
though. I know I made some mistakes too. Thanks for the corrections!