I’m new to reading novels and just bought my first three books. I read somewhere that some books in the world have been edited to address “modern sensibilities”. Is there a way to find out if I unfortunately purchased any of these edits?

I recently purchased the following books:

• Lord of the Flies: (Penguin Classics Deluxe Edition) Paperback – Deckle Edge, November 15, 2016
• The End of Eternity Paperback – September 1, 2020
• Annihilation: A Novel (10th Anniversary Edition) (The Southern Reach Series, 1) Paperback – July 30, 2024

I'm really really excited, but I was wondering if any of the editions I purchased are edited versions. I'd like to enjoy the original versions of the books I purchase.

Is there a way to find out if any of these books were edited? Also, is there a site where I can check if a particular book was edited to address modern sensibilities? Thanks!