The following Material Design Icons are mapped to categories (specified when creating profiles):
"av-photo" -> 0xe130,
"coffee-makers" -> 0xe179,
"digital-cameras" -> 0xe130,
"domestic-appliances" -> 0xe318,
"electric-vehicle-charging-accessories" -> 0xe23d,
"electric-vehicle-charging-stations" -> 0xe23d,
"freezers" -> 0xe037, // Icons.ac_unit,
"fridges" -> 0xe1c9, //Icons.thermostat,
"fridge-freezers" -> 0xe037, // Icons.ac_unit,
"halogen-bulbs" -> 0xf06f7, // Icons.lightbulb_circle_outlined,
"heating-cooling-air-quality" -> 0xf07a5, //Icons.heat_pump,
"heating-plumbing-systems" -> 0xe34b, // Icons.invert_colors,
"hobs" -> 0xefa1, //Icons.dashboard_outlined,
"microwaves" -> 0xe3e6, //Icons.microwave,
"not-categorized" -> 0xe568, //Icons.search_off,
"office" -> 0xf05f7, //Icons.factory_outlined,
"personal-handheld-misters-fans" -> 0xf06fe, //Icons.mode_fan_off_outlined,
"vehicles" -> 0xe13c,
"water-heaters-boilers" -> 0xe34b, // Icons.invert_colors,
"wine-coolers" -> 0xe6f1,
Please request more mappings as needed, to make your list of appliances look really nice!