I think most of the different FATs have now been mentioned
theres been a number of 1 offs & limited production run, tomacs mongoose FAT (2), ricks shockabilly with action tec (indeed theres a few prototype billy floating around). TFM1160, the only fat chance titanium with a disc brake mount. only 182 of the supposed 200 10th anniversarys were ever built. the fat chance wedding tandem, the FATrasta, the FATlanta's, the later all steel, all FAT built shockabillys (200)
certainly in the early 90s FAT produced a large amount of bikes, most went to US but a 1/3 went to germany. personally i think its extremely cool that FATs got such a cult following; that prices are still high & they're still in demand despite the large numbers made
whats the specific info you need to settle the argument neil?
I'd guess the yo eddy was their best selling bike, probabily then the wicked & original FATs, with equal share to buckshavers, monsters, bro-eddys, 1160 fat tis made (from original 92-late 99) down to the all steel billys, 10ths, then the real rare stuff as mentioned above.. criss cross, slim chance ti etc