There are two places to get standards. The Bantam standard, as mentioned above.
Also the American Poultry Association sells The American Standard of Perfection. It's available on their website and includes bantams, large fowl, ducks, geese, guineas, turkeys.
Someone who shows bantams will...
I see lots of different bantams winning big. I don't think the judges have a favorite.
This month, there were several different Red Pyle Modern Games with big wins Although they appear to all be large fowl, not bantams. Still a good choice of breed to show and they are available in bantam...