core/homeassistant/components/input_select/icons.json

{
  "services": {
    "select_next": {
      "service": "mdi:skip-next"
    },
    "select_option": {
      "service": "mdi:check"
    },
    "select_previous": {
      "service": "mdi:skip-previous"
    },
    "select_first": {
      "service": "mdi:skip-backward"
    },
    "select_last": {
      "service": "mdi:skip-forward"
    },
    "set_options": {
      "service": "mdi:cog"
    },
    "reload": {
      "service": "mdi:reload"
    }
  }
}