Have you tried 1984? :')

1177 B.C. The Year Civilisation Collapsed- Eric H Cline. I think that meets your criteria - although ‘narrator isn’t annoying’ is obviously wildly subjective. I listened a while back and found it very interesting. I will be listening to After 1177 B.C. sometime soon.

Too many filters, too much brain work for someone that I don’t know, I don’t care and is not paying me.

not familiar enough with libby or the narrators, but here are some fun non-fiction books that aren’t biographies, pop psychology, or self-help, but which might have general appeal:

• almost anything by Bill Bryson, e.g. At Home, A Walk in the Woods, A Short History of Nearly Everything
• 1491 and 1493 by Charles C. Mann, which debunks a lot of the common myths about Columbus, indigenous Americans, and American colonialism

I would recommend „Paper : paging through history“ by Mark Kurlansky or his other books on Salt or Cod.

They may sound boring at first glance but they’re very interesting and informative.

Stiff: The Curious Lives of Human Cadavers - Mary Roach

The Country of the Blind - Andrew Leland

The Underworld: Journey to the Depths of the Ocean - Susan Casey

Some of my favorites and in that order. They are not biographies and are about different non fiction topics.

Enjoy!!