Swamp Ash can weigh less than Alder. Alder is about as easy to work with as Pine or Poplar. Alder dings pretty easily as well. Usually Alder does not have a distinguished grain pattern. Generally the bodies were painted. You will probably continue your quest for Alder but don't be surprised when you find nothing terribly unique about it. Now Korina might be what you are looking for. Mahogany like... but lighter weight. The original Explorers and Flying V's were Korina. Iirc Reverend uses it.