Also ignore the jerk face from page 1. I love book threads, and wouldn't discourage anyone from looking for their next read.
Agree +100. Reading book threads is almost as much fun as the books...
OK, good absorbing reads, not to heavy...
You've read The Guernsey Literary and Potato Peel Pie Society, which was at the top of my head.
How about some memoirs? Wild: by Cheryl Strayed. Don't Let's Go to the Dogs Tonight by Alexandra Fuller (this one has some "verboten" tragedy, but it is very much not the focus of the book). My Life in France by Julia Child. And while on cooking memoirs, Heat by Bill Buford, is LOL funny, and I rarely actually laugh while reading. Just Kids by Patti Smith is terrific even if you are not a big fan.
Lighter fare but still with some substance: The Night Circus by Erin Morgenstern (sort of a fantasy book for adults). The Paris Wife by Paula McLain (the story according to Hemingway's wife, if you like that whole scene). I'd second Where'd You Go, Bernadette.