8 mostly used guns in ww1?

Just off the top of my head.... The 1903 Springfield for the US forces. The Gewhere 98 Mauser for the German/Prussians. The Lebel 1896 for the French. The M1911 pistol for the US forces, the Luger P08 for the German.
Various machineguns.... The Hotchkiss, the Lewis, the Spandau, the miserable French Chauchet.....The Brits (and Aussies) were using the early Lee-Enfied rifles and the Webley revolvers.

Not French guns. They were never fired and only dropped once.