As of July 2021, the IUCN lists 14,033 animal species and 6,635 plant species as least concern.[1] No least concern assessments have been made for taxa of other kingdoms.
^"IUCN Red List version 2016.1". The IUCN Red List of Threatened Species. International Union for Conservation of Nature and Natural Resources (IUCN). Retrieved 4 July 2016.