Graceling seems like a popular readlike:
"Star Wars meets Graceling"
Cruel Beauty by Rosmund Hodge
"Beauty and the Beast meets Graceling"
And Stephen King is popular to compare things to, which is strange because he doesn't write YA:
"John Green meets The Stand"
Thanks to Kelly for finding this one!
"Stephen King meets Veronica Roth"
Thanks to Katie for finding this one!
"The Shining meets The Breakfast Club"
Thanks to Leila for finding this one!
Comparisons to classics:
"Gone with the Wind meets Matched"
"The Scarlet Letter meets Minority Report"
And some other fun ones:
"Fargo meets Pretty Little Liars"
"Octavian Nothing meets Lorena Bobitt"
Thanks to Angie for finding this one!