Sitka, Engelmann, Italian and a King Billy. The one remaining is Red Spruce.
The King Billy is interesting. In hardness it sits between Cedar and Engelmann and is not that stiff along the grain. It should work OK on an O-18 seeing as though it's quite a short body. It's standard Martin bracing with two tone bars and one side brace but I chucked in a Mario brace butting up to the bottom side of the bridge plate.
The top actually sounded pretty good before I started carving so the lower legs of the X brace have only the tiniest of scallop in them - maybe 1mm.
It has incredible sustain when tapped. More so than the one of BobC's Italian spruce tops I did the day before, which surprised me. But it's certainly not as stiff long grain as the Italian top.
Heres some pics of it plus a few more things I was working on today.



This ones Maple with a Sitka top and curly Jarrah bindings.



This next one is a bargey we've named Triple Choc. Claro Walnut and Cedar with Cheesewood bindings. It's a bit of an experiment with Lowden style finger braces and a bound soundhole.




Bob