Maples are divided in two categories, based on the properties of its wood. There's soft maple and hard maple. Both types are not one single species necessarily, but are a group of closely related maple species with very similar physical properties. Hard maple is usually sugar maple, Acer saccharum, but not always. Either way, the hard maples species are all good for bows, while the soft maples are lousy. I'd be a bit hesitant to make a 100#@32" bow out of a single board of maple, but it could probably be done. As always, look for the best grain you can find, which is more difficult to read than many other woods. Swirls are common in maples, so be critical.
Jatoba has been used in warbows. I haven't tried it myself, but it is pretty good for a belly. It tends to vary in density, with some extraordinarily dense pieces mixed in a pile of boards. Jatoba is less elastic than its density suggests, though. That means it tends to chrysal sooner than a wood with similar SG, such as ipé. To accommodate for its lower elasticity, create a flat belly and design the bow maybe 10% wider than you would with an ipé belly.
