Here's another idea,
Opposites Attract, books from an opposite viewpoint or something along those lines. Basically books that
don't reflect who you are because the author or main character is in significantly different
circumstances than you or believes something significantly different than you do.
BTW, I found it interesting to look through "reading challenge" lists (from
Book Riot or
PopSugar or
wherever) for ideas. There are lots of genre type options but they still did a good job of sparking ideas for me.