ApplePly is similar to BB and made in Oregon. Before the pandemic it was substantially more expensive than BB. I looked at their website and it says...
I just had some plain Jane looking mahogany tear out on my drum sander, hard as that is to believe. No idea what species it is, but it's not African...
This idea should work well since I need to add wood plates behind the brackets anyway to space out the handrail beyond the window casing part way up...