Hi Ashil,
Sorry, I don’t have the thickness of the cases with me at the moment, but the data below might help you visualise the watches, at least in two dimensions. Some have felt that the XGT case is too thick (at about 12mm), but I find that it fits quite comfortably under shirt cuffs and you learn not to walk too close to solid objects!
Enjoy your search,
Andrew
Grande Reverso (XGT) 46.5 x 29.25mm
Grande Taille (GT) 42.2 x 26.0mm
Classic 38.7 x 23.05mm
Ladies 33.2 x 19.5mm