Hmm there is Conseitnsfw who people have said there's also Annix, FPSBlyck, X3D, Rigid3D, RadroachHD and NYL2 are good, just to name a few granted there's plenty of good animators out there however, anyone who is 1 to 1 with GB is not a thing, he made blacked and bleached content (sometimes when people hounded him enough) behind his motive but he did it well. There won't be another GB but there's some other good blacked content creators out there SlayedCoom is pretty good, Smitty is pretty good, and Firebrand is pretty good. I'd say just check around to see who you like