On the more obscure species:
Hackberry ( celtis occidentalis ) has open grain like ash, but much whiter. It is very prone to blue/grey staining while drying. This can be bad or good depending on your taste. personally I like it. Tends to warp and twist a bit. Spalts very nicely
Cottonwood (populus deltoides)usually warps and twists a lot, but can be rather pretty if you find a piece that doesn't. Fine grained and very plain looking with grey/brown streaks. It is a true poplar, and not to be confused with yellow (tulip) poplar, which is the wood most commonly called poplar, though it is not one.
Hickory ( carya species ) Hard and tough as nails. Quite stable, as well. Sapwood is pale pink/tan with darker, reddish heartwood. Something I have been interewsted in using for a neck. Most commonly used for tool handles, ( hammers, etc. )
Sycamore (platanus occidentalis) is another one that tends to twist and warp when drying, but as you said, very pretty quartersawn, like lacewood, but with smaller ray fleck. Gets nice color and spalts well.
Locust- which one? Honeylocust ( gledetsia triacanthos ) is the one with the insane thorns has open grain and deep pink/orange color, very pretty. Very hard. Black or yellow locust (robinia pseudoacacia) is similar, but even harder and heavier. Darker color, more yellow/green. Rings out beautifully when tapped. I have a friend who has used it for xylophone keys with fabulous results. Both have a deep luster to the wood, Both woods dry very easily with very little warping/twisting, but tend to have ring shake. Definitely get some of either if you can.