Interesting.
You have one Orson Scott Card. I'd suggest you read his "Postwatch,
the Redemption of Christopher Columbus".
I'm very surprised you have none by Arthur C. Clarke.
Also, none by Turtledove.
I'm also very surprised you have none by Robert Silverberg,
the quality of his work varies greatly, but I'd suggest his
"Hawksbill Station".
I also quite enjoyed "Boundary" by Eric Flint and Ryk E. Spoor.