At least one Javan Tiger.

https://news.mongabay.com/2024/04/javan-tiger-extinct-species-indonesia-dna-wildlife-conservation/

TLDR: There were no confirmed sightings of the Javan tiger since 1976, and it was declared extinct in 2008. In 2019, at a site where 5 people claimed to have seen a tiger, some hair was left behind that has been DNA tested and matches samples from known remains of Javan tigers. It’s presumably still a doomed species (unless they clone them or something), but I still thought this was cool.