I looked at the Corsair instructions on the Occre website and it only shows sapelli, lime/sycamore, and walnut being supplied with the kit, same as my Occre Xebec kit. Sapelli is the brown wood with porous grain, typically used as a top finish surface in planking. Lime/sycamore is the cream colored wood used for dowels, under layer planking and decking in my kit. The thicker hardwood pieces may be dyed walnut. My kit has walnut pieces, but they aren’t colored like that. Walnut is typically used for deck furnishings, etc…
SteveA's post in New builder here, understanding the different types of wood in your kit??? was marked as the answer