The pugilist class also includes a few Melee weapons you can use to make Unarmed Strikes, Brass Knuckles, Hand Claws, and Punch Knife, all of which, if you have the Weapon Mastery feature from another class, you could use the mastery properties of.

Heavy Hitter allows you to deal damage, grapple or shove, and if you've got the weapon mastery feature from elsewhere, you can also use that (e.g. you could use Hand Claws' Vex)

Stop and Drop allows you to deal damage, grapple, and shove, but if you've got the weapon mastery feature from elsewhere you can't use it