I have a Nora board too but I'm more interested in those 2X4's. How did you get close grain Doug fir? Are they Ash? The board on the top looks like white oak
Oh I am a sucker for ramp questions! Sadly, I don’t have any cool stories about having inside connections with the lumber industry. What you see is whatever was available at Home Depot around April 2020. All pressure treated except the transition plywood which is ultimately covered with Gatorskins.
I am amazed at your skill identifying wood though!