Toffee, chipping, sheet metal shaping set, hammers in my car and toolboxes, claws, lumps and sledges. Small medium and large ball pein likely are most used (small particularly for making gaskets). The electric nail gun means some are used less often these days, but still needed when away from grid power. Panel pins can be rather awkward with a large hammer! So most hammers are at least duplicated, for ease of location on different jobs.
I don’t count mallets as hammers – hide, copper, lead, dead blow, wood (including one for tent pegs and one for fence posts). There is even a coal hammer lurking somewhere in the garage.