A lot of different woods (unstained) shown here. The link is to butternut. Pecan, etc. also shown.
http://www.hearnehardwoods.com/xcart/manufacturers.php?
manufactureid=11.
hardwoods
There are, or used to be, better illustrations, but I have lost the sites.

The hardest to work I ever tried was ebony. I bought an antique ebony stationery box (traveling correspondence box) and the paper holder inside the lid was gone. I bought a small piece of the right size and shaped it to fit. Slow work! Wood so hard that power saws burn the wood and the stink! Hand work all the way. The craftsman who made the box would laugh at my poor attempt, but it works.