I like Fossil's leather bands.
Discussion
They have straight leather bands? The watch that I'm using from them came with a silicone and leather thing. But the loops that hold the strap down have disintegrated.😅
Hm now that I look at it, they are leather, but with some eco-friendly tanning process.
https://www.fossil.com/en-us/products/22mm-dark-brown-litehide-leather-strap/S221497.html