That's what we've been finding too. Bigger fish down deep, as close to the bottom as you dare, in 200' of water.
For us, hoochies catching the bigger fish, unders & coho only on spoons. Purple haze & green spatterback both working. Purple more consistent.
One evening last week we pulled in 3 Chinook, right on the upper length limit. The first one was so dark, I released it at the side of the boat. The other two were not nearly as dark, so we kept them. Both had pale marbled meat.
I've never seen deep running dark Chinook before. Miles from any fresh water. Weird.