There is science behind this. So In brevity I’ll explaine.
When wood burns it gives off many chemicals. But the most important chemicals for food look or presentation after cooking are, nitrite and the ability to make carbon monoxide.
These two chemicals will help form the coveted “smoke ring”. The nitrite transforms into nitric oxide (same thing cure #1 does) and carbon monoxide also is capable of fixing iron molecules in meat. Carbon monoxide being the weaker of the two.
Now all woods can produce these chemicals, however some have more than others, especially nitrite. The nitrite rich woods are generally fruit woods from an orchard. Mostly because of fertilizer. That said some plant species (trees included) feed or uptake more nitrogen than others. So just because nitrogen is available does not correlate straight across to uptake.
For instance, cherry trees will uptake more available nitrogen than will an apple tree. Nut trees also are not heavy feeders of nitrogen, but trees that grow on a river bank will make prettier food than inland trees because of the soil. Cherry and plum are heavy nitrogen feeders. I’m sure you can source some other good woods around HI. Lots of fruit bearing trees around you. I’m sure many farmed as well. Look there.