Your flaming birch example looks quite a bit like curly birch. I talked to a guy whose father sawed curly birch for propellor props during WWII. He was up in Ontario and got $15/Mbf, but it had to be clear.
Most of our birch is black birch (Betula lenta). Quite a bit has that dark heart, and sometimes it gets streaked. I just turned a pen from one of those dark hearts, and I thought it looked better than the cherry did.
I've also heard sycamore called lacewood.
Of course, there's always wormy maple that they call Ambrosia maple.