Nikumaroro was also searched in 2019 by Robert Ballard (and not found): Famed oceanographer searches for Amelia Earhart’s plane https://www.usatoday.com/story/news/nation-world/2019/08/02/...

There's also the 2024 find that was a (convincing) plane shaped rock near Howland Island: They thought they’d found Amelia Earhart’s plane. Instead, the search continues https://edition.cnn.com/2024/11/21/science/amelia-earhart-pl...