It’s common for dusty, forgotten pages to suddenly reappear in search results...

https://blogfreely.net/murciajpvo/why-does-an-old-staff-bio-keep-showing-up-in-due-diligence

It’s common for dusty, forgotten pages to suddenly reappear in search results due to automated caching issues. When these legacy ghosts resurface, they can confuse users and hurt your current SEO strategy