Blocktim (pls, the best, master of details)
Barnabas (cbrown town city, random stuff)
Lordy Lord (utopia city builds, his city)
Sleven (my pal)
King Leo (his castle, travels)
Blur (labs, his city, casino)
Fob (quality towns)
Mr. Nobody (spo projects, temple)
Sumz (sumz city)
Bushido (many medium sized dm maps)
TheArmyGuy (planes, trains)
Dione (help me a lot)
NASAboy3000 (cool stuff at bones4)
Kobewarrior (awesome projects)
Drake (C clan founder)
Furdle (ye, he is good too)
Siba (San adreas city)
Demian (he made the blocktown maps)
Skill4life (he finished something, yes)
Brickitect (Ruins, his city, stuff)
morgellons (Terrain, Mt Blockmore)
Added:
Ant (because pal)
Mr.Lol (his stadium, big events)
Jamjar (stuck in traffic)
Monkeyboy (Lot of medium sized builds)
Ladezkik (pal)
Whermacht (nice dm maps)
Mr.Cookie (His houses, details)
Tally (helped me a lot)
Matador (50's houses)
Gunny (engine stuff)
only ones i can think of atm
ill add more