would be very hard
an example:
mds maps, mostly of his maps are labaled as Unknown, not mds
also many maps labeled as Unknown can be made by many diffrent makers, example Wurstfinger, Tsuneo and so on...
what about races made by same person but during long time between many clans?
[2F2F]Ush, [FSR]Ush and so on, same person, diffrent names