This is great!
Not that we need to label and classify everything, but I see three natural groups here;
1) Big Boy Club - 8 inch diameter or greater, "boomerang-able". Makers listed, led by Eric Wolff.
2) Giant Club - 24 inch diameter or greater, "throw-to-the-ground-able". Makers and Throwers listed, led by Lin Sen Hai?
3) Gargantuan Club - too big to throw. Makers listed, led by Joseph Maulk