Rosewood and Maple are very different woods.
Neither rosewood nor maple was chosen originally because they sound good, but because they look good, hold frets well, are easily worked and wear well. For a fretless fingerboard, ebony seems to be the timber of choice...
Other woods should sound completely different again. there is nothing magic about rosewood or maple - just tradition - so all these other woods: Poplar laminate, amaranth, paulownia, laurel to name a few, there's every chance that one or more of these will actually sound better than rosewood or maple, if properly blind tested with all those many other variables controlled.